/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/Problem14_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:04:00,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:04:00,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:04:00,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:04:00,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:04:00,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:04:00,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:04:00,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:04:00,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:04:00,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:04:00,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:04:00,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:04:00,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:04:00,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:04:00,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:04:00,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:04:00,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:04:00,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:04:00,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:04:00,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:04:00,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:04:00,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:04:00,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:04:00,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:04:00,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 23:04:00,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:04:00,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:04:00,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:04:00,571 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 23:04:00,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:04:00,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:04:00,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:04:00,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:04:00,590 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:04:00,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:04:00,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:04:00,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:04:00,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:04:00,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:04:00,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:04:00,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:04:00,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:04:00,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:04:00,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:04:00,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:04:00,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:04:00,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:04:00,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:04:00,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:04:00,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:04:00,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:04:00,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:04:00,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:04:00,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:04:00,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:04:00,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:00,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:04:00,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:04:00,596 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 23:04:00,929 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:04:00,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:04:00,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:04:00,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:04:00,955 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:04:00,956 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-07-21 23:04:01,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49539e0ca/8a2fa6eb9780468e9f7f385af2d4d6b7/FLAG4eef771c4 [2020-07-21 23:04:01,674 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:04:01,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-07-21 23:04:01,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49539e0ca/8a2fa6eb9780468e9f7f385af2d4d6b7/FLAG4eef771c4 [2020-07-21 23:04:01,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49539e0ca/8a2fa6eb9780468e9f7f385af2d4d6b7 [2020-07-21 23:04:01,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:04:01,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:04:01,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:04:01,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:04:01,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:04:01,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:04:01" (1/1) ... [2020-07-21 23:04:01,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c7b11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:01, skipping insertion in model container [2020-07-21 23:04:01,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:04:01" (1/1) ... [2020-07-21 23:04:01,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:04:02,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:04:02,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:04:02,573 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:04:02,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:04:02,869 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:04:02,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:02 WrapperNode [2020-07-21 23:04:02,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:04:02,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:04:02,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:04:02,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:04:02,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:02" (1/1) ... [2020-07-21 23:04:02,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:02" (1/1) ... [2020-07-21 23:04:02,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:02" (1/1) ... [2020-07-21 23:04:02,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:02" (1/1) ... [2020-07-21 23:04:02,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:02" (1/1) ... [2020-07-21 23:04:02,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:02" (1/1) ... [2020-07-21 23:04:02,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:02" (1/1) ... [2020-07-21 23:04:03,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:04:03,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:04:03,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:04:03,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:04:03,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:02" (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 23:04:03,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:04:03,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:04:03,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 23:04:03,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:04:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 23:04:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:04:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:04:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 23:04:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:04:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:04:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:04:05,177 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:04:05,177 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 23:04:05,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:04:05 BoogieIcfgContainer [2020-07-21 23:04:05,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:04:05,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:04:05,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:04:05,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:04:05,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:04:01" (1/3) ... [2020-07-21 23:04:05,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368d9099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:04:05, skipping insertion in model container [2020-07-21 23:04:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:02" (2/3) ... [2020-07-21 23:04:05,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368d9099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:04:05, skipping insertion in model container [2020-07-21 23:04:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:04:05" (3/3) ... [2020-07-21 23:04:05,195 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-07-21 23:04:05,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:04:05,218 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:04:05,233 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:04:05,261 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:04:05,261 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:04:05,261 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:04:05,261 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:04:05,262 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:04:05,262 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:04:05,262 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:04:05,262 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:04:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-07-21 23:04:05,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 23:04:05,299 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:05,301 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] [2020-07-21 23:04:05,301 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:05,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:05,308 INFO L82 PathProgramCache]: Analyzing trace with hash -281448013, now seen corresponding path program 1 times [2020-07-21 23:04:05,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:05,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214490741] [2020-07-21 23:04:05,319 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 23:04:05,451 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:05,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:05,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 23:04:05,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:05,545 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 23:04:05,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:05,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214490741] [2020-07-21 23:04:05,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:05,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:05,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391689990] [2020-07-21 23:04:05,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:05,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:05,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:05,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:05,576 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 3 states. [2020-07-21 23:04:07,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:07,057 INFO L93 Difference]: Finished difference Result 688 states and 1223 transitions. [2020-07-21 23:04:07,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:07,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-07-21 23:04:07,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:07,078 INFO L225 Difference]: With dead ends: 688 [2020-07-21 23:04:07,078 INFO L226 Difference]: Without dead ends: 372 [2020-07-21 23:04:07,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-07-21 23:04:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2020-07-21 23:04:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-07-21 23:04:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 560 transitions. [2020-07-21 23:04:07,167 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 560 transitions. Word has length 56 [2020-07-21 23:04:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:07,168 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 560 transitions. [2020-07-21 23:04:07,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 560 transitions. [2020-07-21 23:04:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-07-21 23:04:07,175 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:07,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:07,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:07,384 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:07,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1442467785, now seen corresponding path program 1 times [2020-07-21 23:04:07,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:07,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646329165] [2020-07-21 23:04:07,387 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 23:04:07,497 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:07,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:07,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 23:04:07,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:04:07,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:07,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646329165] [2020-07-21 23:04:07,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:07,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:04:07,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335280899] [2020-07-21 23:04:07,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:04:07,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:07,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:04:07,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:04:07,603 INFO L87 Difference]: Start difference. First operand 372 states and 560 transitions. Second operand 5 states. [2020-07-21 23:04:09,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:09,251 INFO L93 Difference]: Finished difference Result 1122 states and 1722 transitions. [2020-07-21 23:04:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 23:04:09,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-07-21 23:04:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:09,260 INFO L225 Difference]: With dead ends: 1122 [2020-07-21 23:04:09,260 INFO L226 Difference]: Without dead ends: 756 [2020-07-21 23:04:09,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:04:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-07-21 23:04:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 744. [2020-07-21 23:04:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-07-21 23:04:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1011 transitions. [2020-07-21 23:04:09,332 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1011 transitions. Word has length 135 [2020-07-21 23:04:09,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:09,333 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 1011 transitions. [2020-07-21 23:04:09,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:04:09,333 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1011 transitions. [2020-07-21 23:04:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-21 23:04:09,337 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:09,338 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 23:04:09,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:09,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:09,554 INFO L82 PathProgramCache]: Analyzing trace with hash 123351809, now seen corresponding path program 1 times [2020-07-21 23:04:09,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:09,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131812299] [2020-07-21 23:04:09,556 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 23:04:09,658 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:09,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:09,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 23:04:09,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:09,748 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 4, 1] term [2020-07-21 23:04:09,749 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:09,751 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:09,753 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:04:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:04:09,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:09,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131812299] [2020-07-21 23:04:09,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:09,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 23:04:09,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358239812] [2020-07-21 23:04:09,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:04:09,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:09,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:04:09,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:04:09,916 INFO L87 Difference]: Start difference. First operand 744 states and 1011 transitions. Second operand 6 states. [2020-07-21 23:04:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:11,881 INFO L93 Difference]: Finished difference Result 1934 states and 2592 transitions. [2020-07-21 23:04:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 23:04:11,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-07-21 23:04:11,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:11,895 INFO L225 Difference]: With dead ends: 1934 [2020-07-21 23:04:11,895 INFO L226 Difference]: Without dead ends: 1196 [2020-07-21 23:04:11,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-07-21 23:04:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2020-07-21 23:04:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1122. [2020-07-21 23:04:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-07-21 23:04:11,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1463 transitions. [2020-07-21 23:04:11,963 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1463 transitions. Word has length 139 [2020-07-21 23:04:11,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:11,966 INFO L479 AbstractCegarLoop]: Abstraction has 1122 states and 1463 transitions. [2020-07-21 23:04:11,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:04:11,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1463 transitions. [2020-07-21 23:04:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-21 23:04:11,979 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:11,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 23:04:12,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:12,194 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:12,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:12,195 INFO L82 PathProgramCache]: Analyzing trace with hash 502777661, now seen corresponding path program 1 times [2020-07-21 23:04:12,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:12,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685450753] [2020-07-21 23:04:12,196 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 23:04:12,346 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:12,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:12,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 23:04:12,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:12,442 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 23:04:12,442 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:12,446 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:12,469 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:04:12,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:12,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685450753] [2020-07-21 23:04:12,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:12,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:04:12,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380804765] [2020-07-21 23:04:12,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:04:12,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:12,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:04:12,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:04:12,590 INFO L87 Difference]: Start difference. First operand 1122 states and 1463 transitions. Second operand 5 states. [2020-07-21 23:04:14,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:14,257 INFO L93 Difference]: Finished difference Result 2260 states and 2967 transitions. [2020-07-21 23:04:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 23:04:14,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-07-21 23:04:14,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:14,274 INFO L225 Difference]: With dead ends: 2260 [2020-07-21 23:04:14,275 INFO L226 Difference]: Without dead ends: 1144 [2020-07-21 23:04:14,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 23:04:14,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2020-07-21 23:04:14,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1122. [2020-07-21 23:04:14,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-07-21 23:04:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1380 transitions. [2020-07-21 23:04:14,337 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1380 transitions. Word has length 189 [2020-07-21 23:04:14,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:14,339 INFO L479 AbstractCegarLoop]: Abstraction has 1122 states and 1380 transitions. [2020-07-21 23:04:14,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:04:14,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1380 transitions. [2020-07-21 23:04:14,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-07-21 23:04:14,347 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:14,348 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 23:04:14,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:14,563 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:14,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1541197282, now seen corresponding path program 1 times [2020-07-21 23:04:14,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:14,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107225222] [2020-07-21 23:04:14,565 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 23:04:14,960 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:14,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:14,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 23:04:14,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-07-21 23:04:15,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:15,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107225222] [2020-07-21 23:04:15,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:15,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:04:15,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40188483] [2020-07-21 23:04:15,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:04:15,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:15,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:04:15,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:04:15,186 INFO L87 Difference]: Start difference. First operand 1122 states and 1380 transitions. Second operand 5 states. [2020-07-21 23:04:16,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:16,552 INFO L93 Difference]: Finished difference Result 2988 states and 3776 transitions. [2020-07-21 23:04:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 23:04:16,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 354 [2020-07-21 23:04:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:16,570 INFO L225 Difference]: With dead ends: 2988 [2020-07-21 23:04:16,570 INFO L226 Difference]: Without dead ends: 1872 [2020-07-21 23:04:16,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:04:16,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2020-07-21 23:04:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1676. [2020-07-21 23:04:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2020-07-21 23:04:16,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2049 transitions. [2020-07-21 23:04:16,639 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2049 transitions. Word has length 354 [2020-07-21 23:04:16,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:16,640 INFO L479 AbstractCegarLoop]: Abstraction has 1676 states and 2049 transitions. [2020-07-21 23:04:16,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:04:16,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2049 transitions. [2020-07-21 23:04:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-07-21 23:04:16,650 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:16,651 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 23:04:16,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:16,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:16,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:16,866 INFO L82 PathProgramCache]: Analyzing trace with hash 507647054, now seen corresponding path program 1 times [2020-07-21 23:04:16,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:16,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297063654] [2020-07-21 23:04:16,867 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 23:04:17,093 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:17,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:17,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 23:04:17,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:17,235 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 524 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-07-21 23:04:17,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:04:17,374 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 23:04:17,374 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:17,375 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:17,376 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 351 proven. 73 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-07-21 23:04:17,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297063654] [2020-07-21 23:04:17,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:04:17,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 23:04:17,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141031417] [2020-07-21 23:04:17,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 23:04:17,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:17,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 23:04:17,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:04:17,680 INFO L87 Difference]: Start difference. First operand 1676 states and 2049 transitions. Second operand 7 states. [2020-07-21 23:04:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:20,134 INFO L93 Difference]: Finished difference Result 4286 states and 5407 transitions. [2020-07-21 23:04:20,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 23:04:20,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 427 [2020-07-21 23:04:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:20,151 INFO L225 Difference]: With dead ends: 4286 [2020-07-21 23:04:20,152 INFO L226 Difference]: Without dead ends: 2616 [2020-07-21 23:04:20,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 23:04:20,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2020-07-21 23:04:20,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2250. [2020-07-21 23:04:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2020-07-21 23:04:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2882 transitions. [2020-07-21 23:04:20,247 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2882 transitions. Word has length 427 [2020-07-21 23:04:20,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:20,248 INFO L479 AbstractCegarLoop]: Abstraction has 2250 states and 2882 transitions. [2020-07-21 23:04:20,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 23:04:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2882 transitions. [2020-07-21 23:04:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-07-21 23:04:20,258 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:20,258 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:20,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:20,473 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:20,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:20,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1567093203, now seen corresponding path program 1 times [2020-07-21 23:04:20,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:20,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701846715] [2020-07-21 23:04:20,475 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 23:04:20,691 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:20,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:20,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 23:04:20,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:21,174 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 44 [2020-07-21 23:04:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 397 proven. 169 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-07-21 23:04:21,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:04:21,521 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,525 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,527 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,529 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,530 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,531 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,534 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,536 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,538 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,540 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,543 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,544 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,545 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,548 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,550 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,552 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,554 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,557 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,558 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,563 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,564 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,567 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,573 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,576 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,579 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,585 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,587 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,588 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,594 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,597 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,602 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,605 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,608 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,609 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,610 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,611 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,612 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,614 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,615 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,616 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,618 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,620 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,621 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,622 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,624 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,626 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,627 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,628 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,631 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,632 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,633 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,634 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,636 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,638 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,638 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,640 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,642 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,643 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,644 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,646 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,651 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,652 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,653 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,676 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,677 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,678 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,679 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,680 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,682 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,684 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,685 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,686 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,688 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,689 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,690 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,691 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,694 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,694 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,696 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,698 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,699 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,700 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,701 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,702 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,704 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,706 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,707 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,709 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,710 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,711 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,713 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,715 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,716 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,718 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 373 proven. 83 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-07-21 23:04:21,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701846715] [2020-07-21 23:04:21,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:04:21,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-07-21 23:04:21,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631636819] [2020-07-21 23:04:21,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 23:04:21,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:21,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 23:04:21,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-07-21 23:04:21,935 INFO L87 Difference]: Start difference. First operand 2250 states and 2882 transitions. Second operand 11 states. [2020-07-21 23:04:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:27,519 INFO L93 Difference]: Finished difference Result 6916 states and 9342 transitions. [2020-07-21 23:04:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 23:04:27,520 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 442 [2020-07-21 23:04:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:27,552 INFO L225 Difference]: With dead ends: 6916 [2020-07-21 23:04:27,553 INFO L226 Difference]: Without dead ends: 4672 [2020-07-21 23:04:27,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 877 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-07-21 23:04:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2020-07-21 23:04:27,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 4666. [2020-07-21 23:04:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4666 states. [2020-07-21 23:04:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4666 states to 4666 states and 6228 transitions. [2020-07-21 23:04:27,729 INFO L78 Accepts]: Start accepts. Automaton has 4666 states and 6228 transitions. Word has length 442 [2020-07-21 23:04:27,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:27,730 INFO L479 AbstractCegarLoop]: Abstraction has 4666 states and 6228 transitions. [2020-07-21 23:04:27,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 23:04:27,730 INFO L276 IsEmpty]: Start isEmpty. Operand 4666 states and 6228 transitions. [2020-07-21 23:04:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-07-21 23:04:27,746 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:27,747 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 23:04:27,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:27,956 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:27,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:27,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1603640885, now seen corresponding path program 1 times [2020-07-21 23:04:27,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:27,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578140688] [2020-07-21 23:04:27,958 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 23:04:28,339 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:28,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:28,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-21 23:04:28,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:28,679 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 50 [2020-07-21 23:04:28,788 INFO L501 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-07-21 23:04:28,789 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 2 disjuncts [2020-07-21 23:04:28,790 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 3 disjuncts [2020-07-21 23:04:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 397 proven. 220 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-07-21 23:04:29,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:04:29,589 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-07-21 23:04:29,630 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 23:04:29,631 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:04:29,632 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 23:04:29,633 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:29,634 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 23:04:29,635 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 23:04:29,636 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:04:29,636 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 23:04:29,637 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 23:04:30,020 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,023 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,025 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,027 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,028 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,028 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,029 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,031 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,032 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,033 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,033 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,035 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,037 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,039 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,041 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,042 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,043 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,044 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,046 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,047 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,048 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,049 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,050 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,052 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,053 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,054 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,057 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,058 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,059 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,061 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,063 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,063 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,065 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,066 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,069 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,071 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,071 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,072 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,073 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,074 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,075 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,076 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,078 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,079 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,080 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,082 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,083 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,084 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,088 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,094 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,095 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,096 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,097 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,098 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,100 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,101 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,104 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,106 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,107 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,111 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,113 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,115 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,116 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,119 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,122 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,124 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,126 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,127 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,128 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,128 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,130 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,131 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,132 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,134 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,136 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,136 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,137 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,138 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,139 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,140 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,141 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,142 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,143 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,144 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,149 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,151 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,156 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,157 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,158 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,159 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,160 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,161 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,162 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,164 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,165 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,166 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,168 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,169 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,170 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,170 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,171 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,172 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,173 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,174 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,175 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,177 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,178 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,178 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,180 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,182 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,187 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,188 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,190 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,191 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,192 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,193 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,194 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,197 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,199 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,202 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,205 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,206 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,207 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,208 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,210 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,211 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,212 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,254 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,255 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,256 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,256 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,257 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,259 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,260 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,261 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,262 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,263 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,264 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,265 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,273 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,276 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,277 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,279 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,284 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,285 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,286 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,287 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,288 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,291 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,292 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,293 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,295 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,296 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,296 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,297 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,299 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,300 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:30,301 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 424 proven. 83 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-07-21 23:04:31,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578140688] [2020-07-21 23:04:31,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:04:31,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 13 [2020-07-21 23:04:31,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400100190] [2020-07-21 23:04:31,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 23:04:31,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:31,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 23:04:31,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-07-21 23:04:31,182 INFO L87 Difference]: Start difference. First operand 4666 states and 6228 transitions. Second operand 13 states. [2020-07-21 23:04:32,289 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 25 [2020-07-21 23:04:32,878 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-07-21 23:04:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:36,162 INFO L93 Difference]: Finished difference Result 8976 states and 12110 transitions. [2020-07-21 23:04:36,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-21 23:04:36,163 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 534 [2020-07-21 23:04:36,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:36,193 INFO L225 Difference]: With dead ends: 8976 [2020-07-21 23:04:36,194 INFO L226 Difference]: Without dead ends: 4868 [2020-07-21 23:04:36,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1103 GetRequests, 1066 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=258, Invalid=798, Unknown=0, NotChecked=0, Total=1056 [2020-07-21 23:04:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2020-07-21 23:04:36,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4676. [2020-07-21 23:04:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2020-07-21 23:04:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 6226 transitions. [2020-07-21 23:04:36,358 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 6226 transitions. Word has length 534 [2020-07-21 23:04:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:36,360 INFO L479 AbstractCegarLoop]: Abstraction has 4676 states and 6226 transitions. [2020-07-21 23:04:36,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 23:04:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 6226 transitions. [2020-07-21 23:04:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2020-07-21 23:04:36,371 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:36,372 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:36,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:36,586 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:36,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:36,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1683628237, now seen corresponding path program 1 times [2020-07-21 23:04:36,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:36,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763065358] [2020-07-21 23:04:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:36,988 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:36,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:36,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:04:37,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1238 backedges. 864 proven. 2 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2020-07-21 23:04:37,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:04:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1238 backedges. 594 proven. 83 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2020-07-21 23:04:38,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763065358] [2020-07-21 23:04:38,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:04:38,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 23:04:38,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750794974] [2020-07-21 23:04:38,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 23:04:38,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:38,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 23:04:38,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:04:38,183 INFO L87 Difference]: Start difference. First operand 4676 states and 6226 transitions. Second operand 7 states. [2020-07-21 23:04:40,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:40,832 INFO L93 Difference]: Finished difference Result 11186 states and 15625 transitions. [2020-07-21 23:04:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 23:04:40,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 589 [2020-07-21 23:04:40,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:40,877 INFO L225 Difference]: With dead ends: 11186 [2020-07-21 23:04:40,877 INFO L226 Difference]: Without dead ends: 7070 [2020-07-21 23:04:40,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1187 GetRequests, 1176 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 23:04:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2020-07-21 23:04:41,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 7070. [2020-07-21 23:04:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7070 states. [2020-07-21 23:04:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 9189 transitions. [2020-07-21 23:04:41,138 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 9189 transitions. Word has length 589 [2020-07-21 23:04:41,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:41,139 INFO L479 AbstractCegarLoop]: Abstraction has 7070 states and 9189 transitions. [2020-07-21 23:04:41,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 23:04:41,140 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 9189 transitions. [2020-07-21 23:04:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2020-07-21 23:04:41,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:41,169 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:41,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:41,384 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:41,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:41,385 INFO L82 PathProgramCache]: Analyzing trace with hash 599863032, now seen corresponding path program 1 times [2020-07-21 23:04:41,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:41,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910639433] [2020-07-21 23:04:41,386 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 23:04:41,665 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:41,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:41,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 23:04:41,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:41,853 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 23:04:41,854 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 23:04:41,854 INFO L501 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-07-21 23:04:41,857 INFO L501 QuantifierPusher]: Distributing 5 conjuncts over 2 disjuncts [2020-07-21 23:04:41,858 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-07-21 23:04:41,859 INFO L501 QuantifierPusher]: Distributing 5 conjuncts over 2 disjuncts [2020-07-21 23:04:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 1286 proven. 2 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2020-07-21 23:04:42,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:04:42,626 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 23:04:42,627 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 23:04:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 858 proven. 86 refuted. 0 times theorem prover too weak. 1245 trivial. 0 not checked. [2020-07-21 23:04:43,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910639433] [2020-07-21 23:04:43,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:04:43,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 23:04:43,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817017963] [2020-07-21 23:04:43,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 23:04:43,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:43,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 23:04:43,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-07-21 23:04:43,303 INFO L87 Difference]: Start difference. First operand 7070 states and 9189 transitions. Second operand 12 states. [2020-07-21 23:04:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:45,536 INFO L93 Difference]: Finished difference Result 14137 states and 18326 transitions. [2020-07-21 23:04:45,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 23:04:45,536 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 744 [2020-07-21 23:04:45,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:45,571 INFO L225 Difference]: With dead ends: 14137 [2020-07-21 23:04:45,571 INFO L226 Difference]: Without dead ends: 6723 [2020-07-21 23:04:45,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1495 GetRequests, 1479 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-07-21 23:04:45,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6723 states. [2020-07-21 23:04:45,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6723 to 6672. [2020-07-21 23:04:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6672 states. [2020-07-21 23:04:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6672 states to 6672 states and 7577 transitions. [2020-07-21 23:04:45,760 INFO L78 Accepts]: Start accepts. Automaton has 6672 states and 7577 transitions. Word has length 744 [2020-07-21 23:04:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:45,761 INFO L479 AbstractCegarLoop]: Abstraction has 6672 states and 7577 transitions. [2020-07-21 23:04:45,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 23:04:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 6672 states and 7577 transitions. [2020-07-21 23:04:45,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2020-07-21 23:04:45,778 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:45,779 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:45,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:45,986 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1789439753, now seen corresponding path program 1 times [2020-07-21 23:04:45,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:45,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218642381] [2020-07-21 23:04:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:46,331 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:46,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:46,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 23:04:46,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:46,381 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 23:04:46,381 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:46,382 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:46,399 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2392 backedges. 1642 proven. 2 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2020-07-21 23:04:46,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:04:47,026 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-07-21 23:04:47,069 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 23:04:47,069 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:04:47,070 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 23:04:47,070 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:47,071 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 23:04:47,071 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:47,072 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 2, 1] term [2020-07-21 23:04:47,072 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:47,073 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 1] term [2020-07-21 23:04:47,073 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:47,074 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 23:04:47,075 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:47,075 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:47,076 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:47,092 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:47,093 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:47,192 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:47,195 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2392 backedges. 799 proven. 217 refuted. 0 times theorem prover too weak. 1376 trivial. 0 not checked. [2020-07-21 23:04:48,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218642381] [2020-07-21 23:04:48,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:04:48,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 23:04:48,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471082443] [2020-07-21 23:04:48,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 23:04:48,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:48,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 23:04:48,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:04:48,349 INFO L87 Difference]: Start difference. First operand 6672 states and 7577 transitions. Second operand 7 states. [2020-07-21 23:04:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:51,019 INFO L93 Difference]: Finished difference Result 13548 states and 15482 transitions. [2020-07-21 23:04:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 23:04:51,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 871 [2020-07-21 23:04:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:51,050 INFO L225 Difference]: With dead ends: 13548 [2020-07-21 23:04:51,050 INFO L226 Difference]: Without dead ends: 7064 [2020-07-21 23:04:51,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1755 GetRequests, 1742 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-07-21 23:04:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7064 states. [2020-07-21 23:04:51,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7064 to 6492. [2020-07-21 23:04:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6492 states. [2020-07-21 23:04:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 7280 transitions. [2020-07-21 23:04:51,209 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 7280 transitions. Word has length 871 [2020-07-21 23:04:51,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:51,210 INFO L479 AbstractCegarLoop]: Abstraction has 6492 states and 7280 transitions. [2020-07-21 23:04:51,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 23:04:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 7280 transitions. [2020-07-21 23:04:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2020-07-21 23:04:51,230 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:51,231 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:51,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:51,445 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:51,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:51,446 INFO L82 PathProgramCache]: Analyzing trace with hash -543388230, now seen corresponding path program 1 times [2020-07-21 23:04:51,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:51,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497665575] [2020-07-21 23:04:51,447 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:51,821 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:51,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:51,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:04:51,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2388 backedges. 1545 proven. 2 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2020-07-21 23:04:52,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:04:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2388 backedges. 686 proven. 150 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-07-21 23:04:52,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497665575] [2020-07-21 23:04:52,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:04:52,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 23:04:52,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658098815] [2020-07-21 23:04:52,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:04:52,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:52,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:04:52,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:04:52,872 INFO L87 Difference]: Start difference. First operand 6492 states and 7280 transitions. Second operand 6 states. [2020-07-21 23:04:54,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:54,272 INFO L93 Difference]: Finished difference Result 13164 states and 14904 transitions. [2020-07-21 23:04:54,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 23:04:54,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 892 [2020-07-21 23:04:54,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:54,305 INFO L225 Difference]: With dead ends: 13164 [2020-07-21 23:04:54,306 INFO L226 Difference]: Without dead ends: 7228 [2020-07-21 23:04:54,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1789 GetRequests, 1780 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 23:04:54,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7228 states. [2020-07-21 23:04:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7228 to 7228. [2020-07-21 23:04:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7228 states. [2020-07-21 23:04:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7228 states to 7228 states and 8090 transitions. [2020-07-21 23:04:54,506 INFO L78 Accepts]: Start accepts. Automaton has 7228 states and 8090 transitions. Word has length 892 [2020-07-21 23:04:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:54,507 INFO L479 AbstractCegarLoop]: Abstraction has 7228 states and 8090 transitions. [2020-07-21 23:04:54,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:04:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 7228 states and 8090 transitions. [2020-07-21 23:04:54,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-07-21 23:04:54,530 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:54,531 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 23:04:54,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:54,746 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:54,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1096582534, now seen corresponding path program 1 times [2020-07-21 23:04:54,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:54,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739018126] [2020-07-21 23:04:54,748 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:55,106 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:55,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:55,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 23:04:55,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:55,190 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 3, 1] term [2020-07-21 23:04:55,190 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:04:55,192 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:04:55,232 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2675 backedges. 2157 proven. 10 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2020-07-21 23:04:55,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:04:56,020 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 23:04:56,022 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:56,022 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 23:04:56,023 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:04:56,062 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:56,063 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:56,064 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:56,065 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 23:04:56,065 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:56,185 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:56,187 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:56,232 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:56,234 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2675 backedges. 1049 proven. 644 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2020-07-21 23:04:58,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739018126] [2020-07-21 23:04:58,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:04:58,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-21 23:04:58,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358913200] [2020-07-21 23:04:58,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 23:04:58,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:58,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 23:04:58,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-07-21 23:04:58,060 INFO L87 Difference]: Start difference. First operand 7228 states and 8090 transitions. Second operand 13 states. [2020-07-21 23:05:02,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:05:02,337 INFO L93 Difference]: Finished difference Result 14288 states and 16165 transitions. [2020-07-21 23:05:02,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-21 23:05:02,339 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 978 [2020-07-21 23:05:02,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:05:02,368 INFO L225 Difference]: With dead ends: 14288 [2020-07-21 23:05:02,368 INFO L226 Difference]: Without dead ends: 7616 [2020-07-21 23:05:02,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1989 GetRequests, 1960 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=640, Unknown=0, NotChecked=0, Total=870 [2020-07-21 23:05:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7616 states. [2020-07-21 23:05:02,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7616 to 7596. [2020-07-21 23:05:02,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7596 states. [2020-07-21 23:05:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7596 states to 7596 states and 8457 transitions. [2020-07-21 23:05:02,552 INFO L78 Accepts]: Start accepts. Automaton has 7596 states and 8457 transitions. Word has length 978 [2020-07-21 23:05:02,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:05:02,554 INFO L479 AbstractCegarLoop]: Abstraction has 7596 states and 8457 transitions. [2020-07-21 23:05:02,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 23:05:02,554 INFO L276 IsEmpty]: Start isEmpty. Operand 7596 states and 8457 transitions. [2020-07-21 23:05:02,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2020-07-21 23:05:02,574 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:05:02,575 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:05:02,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:05:02,789 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:05:02,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:05:02,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1699096822, now seen corresponding path program 1 times [2020-07-21 23:05:02,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:05:02,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002121130] [2020-07-21 23:05:02,791 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:05:03,553 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:05:03,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:05:03,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1403 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:05:03,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:05:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3017 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 2604 trivial. 0 not checked. [2020-07-21 23:05:04,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:05:04,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002121130] [2020-07-21 23:05:04,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:05:04,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:05:04,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770476496] [2020-07-21 23:05:04,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:05:04,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:05:04,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:05:04,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:05:04,034 INFO L87 Difference]: Start difference. First operand 7596 states and 8457 transitions. Second operand 3 states. [2020-07-21 23:05:05,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:05:05,013 INFO L93 Difference]: Finished difference Result 8690 states and 9851 transitions. [2020-07-21 23:05:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:05:05,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 991 [2020-07-21 23:05:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:05:05,056 INFO L225 Difference]: With dead ends: 8690 [2020-07-21 23:05:05,056 INFO L226 Difference]: Without dead ends: 8688 [2020-07-21 23:05:05,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 989 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:05:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8688 states. [2020-07-21 23:05:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8688 to 7778. [2020-07-21 23:05:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7778 states. [2020-07-21 23:05:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7778 states to 7778 states and 8727 transitions. [2020-07-21 23:05:05,223 INFO L78 Accepts]: Start accepts. Automaton has 7778 states and 8727 transitions. Word has length 991 [2020-07-21 23:05:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:05:05,224 INFO L479 AbstractCegarLoop]: Abstraction has 7778 states and 8727 transitions. [2020-07-21 23:05:05,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:05:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 7778 states and 8727 transitions. [2020-07-21 23:05:05,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2020-07-21 23:05:05,254 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:05:05,254 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 23:05:05,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:05:05,468 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:05:05,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:05:05,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1573002785, now seen corresponding path program 1 times [2020-07-21 23:05:05,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:05:05,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647431526] [2020-07-21 23:05:05,470 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:05:06,181 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:05:06,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:05:06,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:05:06,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:05:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3261 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 2848 trivial. 0 not checked. [2020-07-21 23:05:06,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:05:06,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647431526] [2020-07-21 23:05:06,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:05:06,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:05:06,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109737159] [2020-07-21 23:05:06,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:05:06,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:05:06,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:05:06,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:05:06,789 INFO L87 Difference]: Start difference. First operand 7778 states and 8727 transitions. Second operand 3 states. [2020-07-21 23:05:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:05:07,811 INFO L93 Difference]: Finished difference Result 15544 states and 17554 transitions. [2020-07-21 23:05:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:05:07,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1074 [2020-07-21 23:05:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:05:07,819 INFO L225 Difference]: With dead ends: 15544 [2020-07-21 23:05:07,820 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:05:07,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 1072 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:05:07,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:05:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:05:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:05:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:05:07,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1074 [2020-07-21 23:05:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:05:07,852 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:05:07,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:05:07,853 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:05:07,853 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:05:08,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:05:08,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:05:09,002 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 108 [2020-07-21 23:05:09,275 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 108 [2020-07-21 23:05:10,769 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 281 DAG size of output: 67 [2020-07-21 23:05:11,193 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 50 [2020-07-21 23:05:11,582 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 50 [2020-07-21 23:05:11,586 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:05:11,587 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~a12~0 |old(~a12~0)|) (= ~a24~0 |old(~a24~0)|) (= ~a21~0 |old(~a21~0)|) (= ~a15~0 |old(~a15~0)|)) [2020-07-21 23:05:11,587 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:05:11,587 INFO L268 CegarLoopResult]: For program point L432(lines 432 870) no Hoare annotation was computed. [2020-07-21 23:05:11,587 INFO L268 CegarLoopResult]: For program point L366(lines 366 870) no Hoare annotation was computed. [2020-07-21 23:05:11,587 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,587 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,587 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,587 INFO L268 CegarLoopResult]: For program point L235(lines 235 870) no Hoare annotation was computed. [2020-07-21 23:05:11,588 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 23:05:11,588 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 23:05:11,588 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 23:05:11,588 INFO L268 CegarLoopResult]: For program point L764(lines 764 870) no Hoare annotation was computed. [2020-07-21 23:05:11,588 INFO L268 CegarLoopResult]: For program point L632(lines 632 870) no Hoare annotation was computed. [2020-07-21 23:05:11,588 INFO L268 CegarLoopResult]: For program point L500(lines 500 870) no Hoare annotation was computed. [2020-07-21 23:05:11,588 INFO L268 CegarLoopResult]: For program point L831(lines 831 870) no Hoare annotation was computed. [2020-07-21 23:05:11,588 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,589 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,589 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,589 INFO L268 CegarLoopResult]: For program point L700(lines 700 870) no Hoare annotation was computed. [2020-07-21 23:05:11,589 INFO L268 CegarLoopResult]: For program point L568(lines 568 870) no Hoare annotation was computed. [2020-07-21 23:05:11,589 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 23:05:11,589 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 23:05:11,589 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 23:05:11,589 INFO L268 CegarLoopResult]: For program point L305(lines 305 870) no Hoare annotation was computed. [2020-07-21 23:05:11,589 INFO L268 CegarLoopResult]: For program point L438(lines 438 870) no Hoare annotation was computed. [2020-07-21 23:05:11,590 INFO L268 CegarLoopResult]: For program point L372(lines 372 870) no Hoare annotation was computed. [2020-07-21 23:05:11,590 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,590 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,590 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,590 INFO L268 CegarLoopResult]: For program point L241(lines 241 870) no Hoare annotation was computed. [2020-07-21 23:05:11,590 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 23:05:11,590 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 23:05:11,591 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 23:05:11,591 INFO L268 CegarLoopResult]: For program point L638(lines 638 870) no Hoare annotation was computed. [2020-07-21 23:05:11,591 INFO L268 CegarLoopResult]: For program point L506(lines 506 870) no Hoare annotation was computed. [2020-07-21 23:05:11,591 INFO L268 CegarLoopResult]: For program point L837(lines 837 870) no Hoare annotation was computed. [2020-07-21 23:05:11,591 INFO L268 CegarLoopResult]: For program point L771(lines 771 870) no Hoare annotation was computed. [2020-07-21 23:05:11,591 INFO L268 CegarLoopResult]: For program point L573(lines 573 870) no Hoare annotation was computed. [2020-07-21 23:05:11,591 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,591 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,592 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,592 INFO L268 CegarLoopResult]: For program point L706(lines 706 870) no Hoare annotation was computed. [2020-07-21 23:05:11,592 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 23:05:11,592 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 23:05:11,592 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 23:05:11,592 INFO L268 CegarLoopResult]: For program point L311(lines 311 870) no Hoare annotation was computed. [2020-07-21 23:05:11,592 INFO L268 CegarLoopResult]: For program point L444(lines 444 870) no Hoare annotation was computed. [2020-07-21 23:05:11,592 INFO L268 CegarLoopResult]: For program point L378(lines 378 870) no Hoare annotation was computed. [2020-07-21 23:05:11,592 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,593 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,593 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,593 INFO L268 CegarLoopResult]: For program point L247(lines 247 870) no Hoare annotation was computed. [2020-07-21 23:05:11,593 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 23:05:11,593 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 23:05:11,593 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 23:05:11,593 INFO L268 CegarLoopResult]: For program point L842(lines 842 870) no Hoare annotation was computed. [2020-07-21 23:05:11,593 INFO L268 CegarLoopResult]: For program point L644(lines 644 870) no Hoare annotation was computed. [2020-07-21 23:05:11,593 INFO L268 CegarLoopResult]: For program point L512(lines 512 870) no Hoare annotation was computed. [2020-07-21 23:05:11,594 INFO L268 CegarLoopResult]: For program point L777(lines 777 870) no Hoare annotation was computed. [2020-07-21 23:05:11,594 INFO L268 CegarLoopResult]: For program point L579(lines 579 870) no Hoare annotation was computed. [2020-07-21 23:05:11,594 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,594 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,594 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,594 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,594 INFO L268 CegarLoopResult]: For program point L712(lines 712 870) no Hoare annotation was computed. [2020-07-21 23:05:11,594 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 23:05:11,595 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 23:05:11,595 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 23:05:11,595 INFO L268 CegarLoopResult]: For program point L449(lines 449 870) no Hoare annotation was computed. [2020-07-21 23:05:11,595 INFO L268 CegarLoopResult]: For program point L317(lines 317 870) no Hoare annotation was computed. [2020-07-21 23:05:11,595 INFO L268 CegarLoopResult]: For program point L384(lines 384 870) no Hoare annotation was computed. [2020-07-21 23:05:11,595 INFO L268 CegarLoopResult]: For program point L252(lines 252 870) no Hoare annotation was computed. [2020-07-21 23:05:11,595 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,595 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,596 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,596 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 23:05:11,596 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 23:05:11,596 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 23:05:11,596 INFO L268 CegarLoopResult]: For program point L848(lines 848 870) no Hoare annotation was computed. [2020-07-21 23:05:11,596 INFO L268 CegarLoopResult]: For program point L650(lines 650 870) no Hoare annotation was computed. [2020-07-21 23:05:11,596 INFO L268 CegarLoopResult]: For program point L518(lines 518 870) no Hoare annotation was computed. [2020-07-21 23:05:11,596 INFO L268 CegarLoopResult]: For program point L783(lines 783 870) no Hoare annotation was computed. [2020-07-21 23:05:11,597 INFO L268 CegarLoopResult]: For program point L585(lines 585 870) no Hoare annotation was computed. [2020-07-21 23:05:11,597 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,597 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,597 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,597 INFO L268 CegarLoopResult]: For program point L718(lines 718 870) no Hoare annotation was computed. [2020-07-21 23:05:11,597 INFO L268 CegarLoopResult]: For program point L454(lines 454 870) no Hoare annotation was computed. [2020-07-21 23:05:11,597 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 23:05:11,597 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 23:05:11,597 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 23:05:11,597 INFO L268 CegarLoopResult]: For program point L323(lines 323 870) no Hoare annotation was computed. [2020-07-21 23:05:11,598 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 872) the Hoare annotation is: (let ((.cse4 (= ~a12~0 |old(~a12~0)|)) (.cse7 (= ~a24~0 |old(~a24~0)|)) (.cse5 (= ~a21~0 |old(~a21~0)|)) (.cse6 (= ~a15~0 |old(~a15~0)|))) (let ((.cse0 (not (<= 0 |old(~a12~0)|))) (.cse2 (not (<= |old(~a15~0)| 5))) (.cse1 (and .cse4 .cse7 .cse5 .cse6)) (.cse3 (and .cse4 (<= ~a21~0 |old(~a21~0)|) .cse7 .cse6 (<= |old(~a21~0)| ~a21~0)))) (and (or .cse0 .cse1 (not (<= |old(~a21~0)| 7))) (or (not (<= (+ |old(~a12~0)| 49) 0)) .cse2 .cse3 (not (<= |old(~a21~0)| 8))) (or .cse1 (not (<= 7 |old(~a15~0)|))) (or (not (= 1 |old(~a24~0)|)) (not (= 6 |old(~a21~0)|)) (and .cse4 (= 1 ~a24~0) .cse5 .cse6) (not (= 5 |old(~a15~0)|))) (or .cse0 .cse1 .cse2) (or .cse1 (not (<= 10 |old(~a21~0)|)) (not (<= |old(~a12~0)| 11)) (not (< 0 (+ |old(~a12~0)| 43)))) (or (= 10 |old(~a21~0)|) .cse3 (not (< 6 |old(~a21~0)|)))))) [2020-07-21 23:05:11,598 INFO L268 CegarLoopResult]: For program point L390(lines 390 870) no Hoare annotation was computed. [2020-07-21 23:05:11,598 INFO L268 CegarLoopResult]: For program point L258(lines 258 870) no Hoare annotation was computed. [2020-07-21 23:05:11,598 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,598 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,598 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,598 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 23:05:11,599 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 23:05:11,599 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 23:05:11,599 INFO L268 CegarLoopResult]: For program point L854(lines 854 870) no Hoare annotation was computed. [2020-07-21 23:05:11,599 INFO L268 CegarLoopResult]: For program point L656(lines 656 870) no Hoare annotation was computed. [2020-07-21 23:05:11,599 INFO L268 CegarLoopResult]: For program point L524(lines 524 870) no Hoare annotation was computed. [2020-07-21 23:05:11,599 INFO L268 CegarLoopResult]: For program point L789(lines 789 870) no Hoare annotation was computed. [2020-07-21 23:05:11,599 INFO L268 CegarLoopResult]: For program point L591(lines 591 870) no Hoare annotation was computed. [2020-07-21 23:05:11,599 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,600 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,600 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,600 INFO L268 CegarLoopResult]: For program point L724(lines 724 870) no Hoare annotation was computed. [2020-07-21 23:05:11,600 INFO L268 CegarLoopResult]: For program point L460(lines 460 870) no Hoare annotation was computed. [2020-07-21 23:05:11,600 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 23:05:11,600 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 23:05:11,600 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 23:05:11,600 INFO L268 CegarLoopResult]: For program point L329(lines 329 870) no Hoare annotation was computed. [2020-07-21 23:05:11,600 INFO L268 CegarLoopResult]: For program point L396(lines 396 870) no Hoare annotation was computed. [2020-07-21 23:05:11,600 INFO L268 CegarLoopResult]: For program point L264(lines 264 870) no Hoare annotation was computed. [2020-07-21 23:05:11,601 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,601 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,601 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,601 INFO L268 CegarLoopResult]: For program point L859(lines 859 870) no Hoare annotation was computed. [2020-07-21 23:05:11,601 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 23:05:11,601 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 23:05:11,601 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 23:05:11,601 INFO L268 CegarLoopResult]: For program point L662(lines 662 870) no Hoare annotation was computed. [2020-07-21 23:05:11,601 INFO L268 CegarLoopResult]: For program point L530(lines 530 870) no Hoare annotation was computed. [2020-07-21 23:05:11,601 INFO L268 CegarLoopResult]: For program point L795(lines 795 870) no Hoare annotation was computed. [2020-07-21 23:05:11,602 INFO L268 CegarLoopResult]: For program point L597(lines 597 870) no Hoare annotation was computed. [2020-07-21 23:05:11,602 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,602 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,602 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,602 INFO L268 CegarLoopResult]: For program point L730(lines 730 870) no Hoare annotation was computed. [2020-07-21 23:05:11,602 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 23:05:11,602 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 23:05:11,602 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 23:05:11,603 INFO L268 CegarLoopResult]: For program point L467(lines 467 870) no Hoare annotation was computed. [2020-07-21 23:05:11,603 INFO L268 CegarLoopResult]: For program point L335(lines 335 870) no Hoare annotation was computed. [2020-07-21 23:05:11,603 INFO L268 CegarLoopResult]: For program point L269(lines 269 870) no Hoare annotation was computed. [2020-07-21 23:05:11,603 INFO L268 CegarLoopResult]: For program point L402(lines 402 870) no Hoare annotation was computed. [2020-07-21 23:05:11,603 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,603 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,603 INFO L268 CegarLoopResult]: For program point L865(lines 865 870) no Hoare annotation was computed. [2020-07-21 23:05:11,603 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 23:05:11,603 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 23:05:11,604 INFO L268 CegarLoopResult]: For program point L668(lines 668 870) no Hoare annotation was computed. [2020-07-21 23:05:11,604 INFO L268 CegarLoopResult]: For program point L536(lines 536 870) no Hoare annotation was computed. [2020-07-21 23:05:11,604 INFO L268 CegarLoopResult]: For program point L801(lines 801 870) no Hoare annotation was computed. [2020-07-21 23:05:11,604 INFO L268 CegarLoopResult]: For program point L735(lines 735 870) no Hoare annotation was computed. [2020-07-21 23:05:11,604 INFO L268 CegarLoopResult]: For program point L603(lines 603 870) no Hoare annotation was computed. [2020-07-21 23:05:11,604 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 154) no Hoare annotation was computed. [2020-07-21 23:05:11,604 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,604 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,605 INFO L268 CegarLoopResult]: For program point L472(lines 472 870) no Hoare annotation was computed. [2020-07-21 23:05:11,605 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 23:05:11,605 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 23:05:11,605 INFO L268 CegarLoopResult]: For program point L341(lines 341 870) no Hoare annotation was computed. [2020-07-21 23:05:11,605 INFO L268 CegarLoopResult]: For program point L275(lines 275 870) no Hoare annotation was computed. [2020-07-21 23:05:11,605 INFO L268 CegarLoopResult]: For program point L408(lines 408 870) no Hoare annotation was computed. [2020-07-21 23:05:11,605 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,605 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,605 INFO L268 CegarLoopResult]: For program point L541(lines 541 870) no Hoare annotation was computed. [2020-07-21 23:05:11,605 INFO L268 CegarLoopResult]: For program point L211(lines 211 870) no Hoare annotation was computed. [2020-07-21 23:05:11,606 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 23:05:11,606 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 23:05:11,606 INFO L268 CegarLoopResult]: For program point L674(lines 674 870) no Hoare annotation was computed. [2020-07-21 23:05:11,606 INFO L268 CegarLoopResult]: For program point L807(lines 807 870) no Hoare annotation was computed. [2020-07-21 23:05:11,606 INFO L268 CegarLoopResult]: For program point L741(lines 741 870) no Hoare annotation was computed. [2020-07-21 23:05:11,606 INFO L268 CegarLoopResult]: For program point L609(lines 609 870) no Hoare annotation was computed. [2020-07-21 23:05:11,606 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,606 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,606 INFO L268 CegarLoopResult]: For program point L478(lines 478 870) no Hoare annotation was computed. [2020-07-21 23:05:11,606 INFO L268 CegarLoopResult]: For program point L280(lines 280 870) no Hoare annotation was computed. [2020-07-21 23:05:11,607 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 23:05:11,607 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 23:05:11,607 INFO L268 CegarLoopResult]: For program point L677(lines 677 870) no Hoare annotation was computed. [2020-07-21 23:05:11,607 INFO L268 CegarLoopResult]: For program point L347(lines 347 870) no Hoare annotation was computed. [2020-07-21 23:05:11,607 INFO L268 CegarLoopResult]: For program point L414(lines 414 870) no Hoare annotation was computed. [2020-07-21 23:05:11,607 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,607 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,607 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,607 INFO L268 CegarLoopResult]: For program point L547(lines 547 870) no Hoare annotation was computed. [2020-07-21 23:05:11,607 INFO L268 CegarLoopResult]: For program point L217(lines 217 870) no Hoare annotation was computed. [2020-07-21 23:05:11,608 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 23:05:11,608 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 23:05:11,608 INFO L268 CegarLoopResult]: For program point L747(lines 747 870) no Hoare annotation was computed. [2020-07-21 23:05:11,608 INFO L268 CegarLoopResult]: For program point L615(lines 615 870) no Hoare annotation was computed. [2020-07-21 23:05:11,608 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,608 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,608 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 23:05:11,608 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,608 INFO L268 CegarLoopResult]: For program point L814(lines 814 870) no Hoare annotation was computed. [2020-07-21 23:05:11,608 INFO L268 CegarLoopResult]: For program point L484(lines 484 870) no Hoare annotation was computed. [2020-07-21 23:05:11,609 INFO L268 CegarLoopResult]: For program point L286(lines 286 870) no Hoare annotation was computed. [2020-07-21 23:05:11,609 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 23:05:11,609 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 23:05:11,609 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 23:05:11,609 INFO L268 CegarLoopResult]: For program point L683(lines 683 870) no Hoare annotation was computed. [2020-07-21 23:05:11,609 INFO L268 CegarLoopResult]: For program point L353(lines 353 870) no Hoare annotation was computed. [2020-07-21 23:05:11,609 INFO L268 CegarLoopResult]: For program point L552(lines 552 870) no Hoare annotation was computed. [2020-07-21 23:05:11,609 INFO L268 CegarLoopResult]: For program point L420(lines 420 870) no Hoare annotation was computed. [2020-07-21 23:05:11,609 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,610 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,610 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,610 INFO L268 CegarLoopResult]: For program point L223(lines 223 870) no Hoare annotation was computed. [2020-07-21 23:05:11,610 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 23:05:11,610 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 23:05:11,610 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 23:05:11,610 INFO L268 CegarLoopResult]: For program point L752(lines 752 870) no Hoare annotation was computed. [2020-07-21 23:05:11,610 INFO L268 CegarLoopResult]: For program point L819(lines 819 870) no Hoare annotation was computed. [2020-07-21 23:05:11,610 INFO L268 CegarLoopResult]: For program point L621(lines 621 870) no Hoare annotation was computed. [2020-07-21 23:05:11,611 INFO L268 CegarLoopResult]: For program point L555(lines 555 870) no Hoare annotation was computed. [2020-07-21 23:05:11,611 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,611 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,611 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,611 INFO L268 CegarLoopResult]: For program point L688(lines 688 870) no Hoare annotation was computed. [2020-07-21 23:05:11,611 INFO L268 CegarLoopResult]: For program point L490(lines 490 870) no Hoare annotation was computed. [2020-07-21 23:05:11,611 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 23:05:11,611 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 23:05:11,611 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 23:05:11,612 INFO L268 CegarLoopResult]: For program point L359(lines 359 870) no Hoare annotation was computed. [2020-07-21 23:05:11,612 INFO L268 CegarLoopResult]: For program point L293(lines 293 870) no Hoare annotation was computed. [2020-07-21 23:05:11,612 INFO L268 CegarLoopResult]: For program point L426(lines 426 870) no Hoare annotation was computed. [2020-07-21 23:05:11,612 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,612 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,612 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,612 INFO L268 CegarLoopResult]: For program point L229(lines 229 870) no Hoare annotation was computed. [2020-07-21 23:05:11,612 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 23:05:11,612 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 23:05:11,612 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 23:05:11,613 INFO L268 CegarLoopResult]: For program point L758(lines 758 870) no Hoare annotation was computed. [2020-07-21 23:05:11,613 INFO L268 CegarLoopResult]: For program point L626(lines 626 870) no Hoare annotation was computed. [2020-07-21 23:05:11,613 INFO L268 CegarLoopResult]: For program point L825(lines 825 870) no Hoare annotation was computed. [2020-07-21 23:05:11,613 INFO L268 CegarLoopResult]: For program point L561(lines 561 870) no Hoare annotation was computed. [2020-07-21 23:05:11,613 INFO L268 CegarLoopResult]: For program point L495(lines 495 870) no Hoare annotation was computed. [2020-07-21 23:05:11,613 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,613 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,613 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:05:11,613 INFO L268 CegarLoopResult]: For program point L694(lines 694 870) no Hoare annotation was computed. [2020-07-21 23:05:11,614 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 23:05:11,614 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 23:05:11,614 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 23:05:11,614 INFO L268 CegarLoopResult]: For program point L299(lines 299 870) no Hoare annotation was computed. [2020-07-21 23:05:11,614 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:05:11,614 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (+ ~a12~0 49) 0) (= 8 ~a15~0) (= 7 ~a21~0) (= 1 ~a24~0)) [2020-07-21 23:05:11,614 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:05:11,615 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:05:11,615 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 874 890) the Hoare annotation is: (or (not (= 7 |old(~a21~0)|)) (not (= 1 |old(~a24~0)|)) (not (= 0 (+ |old(~a12~0)| 49))) (not (= 8 |old(~a15~0)|)) (and (= (+ ~a12~0 49) 0) (<= ~a21~0 |old(~a21~0)|) (= 1 ~a24~0) (= ~a15~0 |old(~a15~0)|) (<= |old(~a21~0)| ~a21~0))) [2020-07-21 23:05:11,615 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 874 890) no Hoare annotation was computed. [2020-07-21 23:05:11,615 INFO L264 CegarLoopResult]: At program point L888(line 888) the Hoare annotation is: (let ((.cse0 (<= 0 ~a12~0)) (.cse2 (<= ~a15~0 5)) (.cse1 (<= ~a21~0 7))) (or (not (= 7 |old(~a21~0)|)) (not (= 1 |old(~a24~0)|)) (<= 7 ~a15~0) (not (= 0 (+ |old(~a12~0)| 49))) (not (= 8 |old(~a15~0)|)) (and .cse0 .cse1) (and (= 6 ~a21~0) (= 1 ~a24~0) (= 5 ~a15~0)) (and .cse2 .cse0) (and (< 6 ~a21~0) (not (= 10 ~a21~0))) (and (<= ~a12~0 11) (< 0 (+ ~a12~0 43)) (<= 10 ~a21~0)) (and (<= (+ ~a12~0 49) 0) .cse2 .cse1))) [2020-07-21 23:05:11,615 INFO L268 CegarLoopResult]: For program point L888-1(line 888) no Hoare annotation was computed. [2020-07-21 23:05:11,616 INFO L268 CegarLoopResult]: For program point L885(line 885) no Hoare annotation was computed. [2020-07-21 23:05:11,616 INFO L264 CegarLoopResult]: At program point L880-2(lines 880 889) the Hoare annotation is: (let ((.cse0 (<= 0 ~a12~0)) (.cse2 (<= ~a15~0 5)) (.cse1 (<= ~a21~0 7))) (or (not (= 7 |old(~a21~0)|)) (not (= 1 |old(~a24~0)|)) (<= 7 ~a15~0) (not (= 0 (+ |old(~a12~0)| 49))) (not (= 8 |old(~a15~0)|)) (and .cse0 .cse1) (and (= 6 ~a21~0) (= 1 ~a24~0) (= 5 ~a15~0)) (and .cse2 .cse0) (and (< 6 ~a21~0) (not (= 10 ~a21~0))) (and (<= ~a12~0 11) (< 0 (+ ~a12~0 43)) (<= 10 ~a21~0)) (and (<= (+ ~a12~0 49) 0) .cse2 .cse1))) [2020-07-21 23:05:11,616 INFO L268 CegarLoopResult]: For program point L880-3(lines 874 890) no Hoare annotation was computed. [2020-07-21 23:05:11,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:05:11 BoogieIcfgContainer [2020-07-21 23:05:11,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:05:11,646 INFO L168 Benchmark]: Toolchain (without parser) took 69719.37 ms. Allocated memory was 135.8 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 98.9 MB in the beginning and 412.9 MB in the end (delta: -314.0 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-07-21 23:05:11,654 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 23:05:11,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 937.00 ms. Allocated memory was 135.8 MB in the beginning and 202.9 MB in the end (delta: 67.1 MB). Free memory was 98.7 MB in the beginning and 164.2 MB in the end (delta: -65.5 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:05:11,656 INFO L168 Benchmark]: Boogie Preprocessor took 134.04 ms. Allocated memory is still 202.9 MB. Free memory was 164.2 MB in the beginning and 158.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-07-21 23:05:11,656 INFO L168 Benchmark]: RCFGBuilder took 2179.03 ms. Allocated memory was 202.9 MB in the beginning and 231.2 MB in the end (delta: 28.3 MB). Free memory was 158.8 MB in the beginning and 153.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-07-21 23:05:11,657 INFO L168 Benchmark]: TraceAbstraction took 66458.18 ms. Allocated memory was 231.2 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 151.7 MB in the beginning and 412.9 MB in the end (delta: -261.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2020-07-21 23:05:11,662 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 937.00 ms. Allocated memory was 135.8 MB in the beginning and 202.9 MB in the end (delta: 67.1 MB). Free memory was 98.7 MB in the beginning and 164.2 MB in the end (delta: -65.5 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.04 ms. Allocated memory is still 202.9 MB. Free memory was 164.2 MB in the beginning and 158.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2179.03 ms. Allocated memory was 202.9 MB in the beginning and 231.2 MB in the end (delta: 28.3 MB). Free memory was 158.8 MB in the beginning and 153.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 66458.18 ms. Allocated memory was 231.2 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 151.7 MB in the beginning and 412.9 MB in the end (delta: -261.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 154]: 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: 880]: Loop Invariant Derived loop invariant: (((((((((!(7 == \old(a21)) || !(1 == \old(a24))) || 7 <= a15) || !(0 == \old(a12) + 49)) || !(8 == \old(a15))) || (0 <= a12 && a21 <= 7)) || ((6 == a21 && 1 == a24) && 5 == a15)) || (a15 <= 5 && 0 <= a12)) || (6 < a21 && !(10 == a21))) || ((a12 <= 11 && 0 < a12 + 43) && 10 <= a21)) || ((a12 + 49 <= 0 && a15 <= 5) && a21 <= 7) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 254 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 62.8s, OverallIterations: 15, TraceHistogramMax: 9, AutomataDifference: 36.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 652 SDtfs, 10950 SDslu, 691 SDs, 0 SdLazy, 17681 SolverSat, 2953 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 24.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14019 GetRequests, 13847 SyntacticMatches, 14 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7778occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 2421 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 321 PreInvPairs, 423 NumberOfFragments, 394 HoareAnnotationTreeSize, 321 FomulaSimplifications, 27055 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 10066 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 4.1s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 8415 NumberOfCodeBlocks, 7087 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 13869 ConstructedInterpolants, 0 QuantifiedInterpolants, 33905721 SizeOfPredicates, 36 NumberOfNonLiveVariables, 10702 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 31129/32957 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...