/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:01:18,621 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 22:01:18,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:01:18,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:01:18,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:01:18,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:01:18,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:01:18,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:01:18,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:01:18,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:01:18,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:01:18,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:01:18,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:01:18,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:01:18,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:01:18,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:01:18,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:01:18,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:01:18,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 22:01:18,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:01:18,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:01:18,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:01:18,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:01:18,728 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:01:18,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:01:18,728 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:01:18,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:01:18,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:01:18,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:01:18,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:01:18,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:01:18,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:01:18,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:01:18,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:01:18,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:01:18,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:01:18,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:01:18,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:01:18,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:01:18,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:01:18,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:01:18,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:01:18,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:01:18,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:01:18,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:01:18,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:18,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:01:18,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:01:18,733 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 -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 22:01:19,027 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:01:19,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:01:19,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:01:19,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:01:19,046 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:01:19,047 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-07-20 22:01:19,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004f7db1c/ee5a966e2aab4fd8a9ddedc244313672/FLAGd179919c4 [2020-07-20 22:01:19,795 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:01:19,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-07-20 22:01:19,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004f7db1c/ee5a966e2aab4fd8a9ddedc244313672/FLAGd179919c4 [2020-07-20 22:01:20,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004f7db1c/ee5a966e2aab4fd8a9ddedc244313672 [2020-07-20 22:01:20,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:01:20,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:01:20,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:01:20,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:01:20,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:01:20,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:01:20" (1/1) ... [2020-07-20 22:01:20,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ceb4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:20, skipping insertion in model container [2020-07-20 22:01:20,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:01:20" (1/1) ... [2020-07-20 22:01:20,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:01:20,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:01:20,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:01:20,566 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:01:20,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:01:20,870 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:01:20,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:20 WrapperNode [2020-07-20 22:01:20,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:01:20,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:01:20,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:01:20,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:01:20,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:20" (1/1) ... [2020-07-20 22:01:20,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:20" (1/1) ... [2020-07-20 22:01:20,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:20" (1/1) ... [2020-07-20 22:01:20,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:20" (1/1) ... [2020-07-20 22:01:20,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:20" (1/1) ... [2020-07-20 22:01:20,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:20" (1/1) ... [2020-07-20 22:01:20,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:20" (1/1) ... [2020-07-20 22:01:20,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:01:20,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:01:20,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:01:20,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:01:20,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:01:21,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:01:21,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:01:21,056 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 22:01:21,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:01:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 22:01:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:01:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:01:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 22:01:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:01:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:01:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:01:22,281 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:01:22,282 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:01:22,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:01:22 BoogieIcfgContainer [2020-07-20 22:01:22,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:01:22,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:01:22,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:01:22,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:01:22,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:01:20" (1/3) ... [2020-07-20 22:01:22,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b86838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:01:22, skipping insertion in model container [2020-07-20 22:01:22,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:20" (2/3) ... [2020-07-20 22:01:22,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b86838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:01:22, skipping insertion in model container [2020-07-20 22:01:22,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:01:22" (3/3) ... [2020-07-20 22:01:22,306 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-07-20 22:01:22,318 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:01:22,332 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:01:22,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:01:22,385 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:01:22,386 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:01:22,387 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:01:22,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:01:22,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:01:22,387 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:01:22,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:01:22,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:01:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 22:01:22,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-07-20 22:01:22,439 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:22,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:01:22,441 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:22,448 INFO L82 PathProgramCache]: Analyzing trace with hash -223585418, now seen corresponding path program 1 times [2020-07-20 22:01:22,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:22,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271260365] [2020-07-20 22:01:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:22,661 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:22,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:22,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:01:22,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:22,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:01:22,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271260365] [2020-07-20 22:01:22,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:01:22,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:01:22,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578128403] [2020-07-20 22:01:22,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:01:22,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:22,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:01:22,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:22,822 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 22:01:23,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:23,836 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2020-07-20 22:01:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:01:23,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-07-20 22:01:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:23,871 INFO L225 Difference]: With dead ends: 547 [2020-07-20 22:01:23,872 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 22:01:23,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:23,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 22:01:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 22:01:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 22:01:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-20 22:01:23,981 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 138 [2020-07-20 22:01:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:23,982 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-20 22:01:23,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:01:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-20 22:01:23,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-07-20 22:01:23,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:23,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:01:24,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:24,191 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:24,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:24,192 INFO L82 PathProgramCache]: Analyzing trace with hash -940546995, now seen corresponding path program 1 times [2020-07-20 22:01:24,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:24,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625758410] [2020-07-20 22:01:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:24,382 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:24,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:24,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:01:24,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:24,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:01:24,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625758410] [2020-07-20 22:01:24,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:01:24,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:01:24,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647156043] [2020-07-20 22:01:24,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:01:24,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:24,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:01:24,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:24,484 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 3 states. [2020-07-20 22:01:25,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:25,070 INFO L93 Difference]: Finished difference Result 820 states and 1181 transitions. [2020-07-20 22:01:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:01:25,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-07-20 22:01:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:25,076 INFO L225 Difference]: With dead ends: 820 [2020-07-20 22:01:25,076 INFO L226 Difference]: Without dead ends: 548 [2020-07-20 22:01:25,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:25,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-07-20 22:01:25,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2020-07-20 22:01:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-07-20 22:01:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 734 transitions. [2020-07-20 22:01:25,105 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 734 transitions. Word has length 148 [2020-07-20 22:01:25,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:25,105 INFO L479 AbstractCegarLoop]: Abstraction has 548 states and 734 transitions. [2020-07-20 22:01:25,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:01:25,106 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 734 transitions. [2020-07-20 22:01:25,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-20 22:01:25,110 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:25,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:01:25,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:25,327 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:25,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:25,329 INFO L82 PathProgramCache]: Analyzing trace with hash 938454151, now seen corresponding path program 1 times [2020-07-20 22:01:25,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:25,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691898860] [2020-07-20 22:01:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:25,464 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:25,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:25,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:01:25,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:25,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:01:25,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691898860] [2020-07-20 22:01:25,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:01:25,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:01:25,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340253403] [2020-07-20 22:01:25,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:01:25,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:25,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:01:25,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:25,528 INFO L87 Difference]: Start difference. First operand 548 states and 734 transitions. Second operand 3 states. [2020-07-20 22:01:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:26,113 INFO L93 Difference]: Finished difference Result 1360 states and 1855 transitions. [2020-07-20 22:01:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:01:26,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-07-20 22:01:26,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:26,123 INFO L225 Difference]: With dead ends: 1360 [2020-07-20 22:01:26,123 INFO L226 Difference]: Without dead ends: 818 [2020-07-20 22:01:26,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:26,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-07-20 22:01:26,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2020-07-20 22:01:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-07-20 22:01:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1060 transitions. [2020-07-20 22:01:26,159 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1060 transitions. Word has length 153 [2020-07-20 22:01:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:26,160 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1060 transitions. [2020-07-20 22:01:26,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:01:26,160 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1060 transitions. [2020-07-20 22:01:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-07-20 22:01:26,164 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:26,165 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:01:26,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:26,381 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:26,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:26,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1348840640, now seen corresponding path program 1 times [2020-07-20 22:01:26,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:26,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347173332] [2020-07-20 22:01:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:26,540 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:26,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:26,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:01:26,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 22:01:26,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:01:26,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347173332] [2020-07-20 22:01:26,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:01:26,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:01:26,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067120649] [2020-07-20 22:01:26,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:01:26,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:26,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:01:26,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:26,628 INFO L87 Difference]: Start difference. First operand 818 states and 1060 transitions. Second operand 3 states. [2020-07-20 22:01:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:27,244 INFO L93 Difference]: Finished difference Result 2035 states and 2696 transitions. [2020-07-20 22:01:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:01:27,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-07-20 22:01:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:27,252 INFO L225 Difference]: With dead ends: 2035 [2020-07-20 22:01:27,252 INFO L226 Difference]: Without dead ends: 1223 [2020-07-20 22:01:27,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:27,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2020-07-20 22:01:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1088. [2020-07-20 22:01:27,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1088 states. [2020-07-20 22:01:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1409 transitions. [2020-07-20 22:01:27,328 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1409 transitions. Word has length 171 [2020-07-20 22:01:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:27,329 INFO L479 AbstractCegarLoop]: Abstraction has 1088 states and 1409 transitions. [2020-07-20 22:01:27,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:01:27,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1409 transitions. [2020-07-20 22:01:27,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-20 22:01:27,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:27,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:01:27,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:27,548 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:27,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:27,549 INFO L82 PathProgramCache]: Analyzing trace with hash -167136995, now seen corresponding path program 1 times [2020-07-20 22:01:27,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:27,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302285234] [2020-07-20 22:01:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:27,665 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:27,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:27,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:01:27,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:27,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:01:27,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302285234] [2020-07-20 22:01:27,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:01:27,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:01:27,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351510] [2020-07-20 22:01:27,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:01:27,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:27,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:01:27,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:27,721 INFO L87 Difference]: Start difference. First operand 1088 states and 1409 transitions. Second operand 3 states. [2020-07-20 22:01:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:28,280 INFO L93 Difference]: Finished difference Result 2303 states and 3005 transitions. [2020-07-20 22:01:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:01:28,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2020-07-20 22:01:28,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:28,282 INFO L225 Difference]: With dead ends: 2303 [2020-07-20 22:01:28,282 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:01:28,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:01:28,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:01:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:01:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:01:28,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2020-07-20 22:01:28,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:28,290 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:01:28,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:01:28,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:01:28,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:01:28,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:28,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:01:28,843 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2020-07-20 22:01:28,909 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:01:28,910 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:01:28,910 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:01:28,910 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 22:01:28,911 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 22:01:28,911 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,911 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,912 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,912 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,913 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,913 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,913 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 22:01:28,914 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 22:01:28,914 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 22:01:28,914 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 22:01:28,914 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 22:01:28,914 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 22:01:28,914 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 22:01:28,915 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 22:01:28,915 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 22:01:28,915 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 22:01:28,916 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,922 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,922 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,922 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,922 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,922 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,923 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 22:01:28,923 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 22:01:28,923 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 22:01:28,923 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 22:01:28,923 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 22:01:28,924 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 22:01:28,924 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 22:01:28,924 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 22:01:28,924 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 22:01:28,927 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 22:01:28,927 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 22:01:28,927 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 572) no Hoare annotation was computed. [2020-07-20 22:01:28,928 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 22:01:28,928 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 22:01:28,928 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 22:01:28,928 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 22:01:28,928 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,928 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,929 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,929 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,929 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,929 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 22:01:28,929 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 22:01:28,930 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 22:01:28,930 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 22:01:28,930 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 22:01:28,930 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 22:01:28,930 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 22:01:28,930 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 22:01:28,931 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 22:01:28,931 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,932 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,932 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,932 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,932 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,932 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 22:01:28,933 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 22:01:28,933 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 22:01:28,933 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 22:01:28,935 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 22:01:28,935 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 22:01:28,976 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 22:01:28,976 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 22:01:28,976 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 22:01:28,976 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 22:01:28,977 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 22:01:28,977 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 22:01:28,977 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 22:01:28,977 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,977 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,977 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,977 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,977 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,978 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 22:01:28,978 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 22:01:28,978 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 22:01:28,978 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 22:01:28,978 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 22:01:28,978 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 22:01:28,978 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 22:01:28,979 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 22:01:28,979 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 22:01:28,979 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,979 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,979 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,979 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,979 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,979 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,979 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 22:01:28,980 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,980 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 22:01:28,980 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 22:01:28,980 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 22:01:28,980 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 22:01:28,980 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 22:01:28,980 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 22:01:28,980 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 22:01:28,981 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 22:01:28,981 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 22:01:28,981 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 22:01:28,981 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 22:01:28,981 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 22:01:28,981 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 22:01:28,981 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,981 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,982 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,982 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,982 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,982 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 22:01:28,982 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 22:01:28,982 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 22:01:28,983 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 22:01:28,983 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 22:01:28,983 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 22:01:28,983 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 22:01:28,983 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 22:01:28,983 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,988 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,988 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,989 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,989 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,989 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 22:01:28,990 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 22:01:28,990 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 22:01:28,990 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 22:01:28,990 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 22:01:28,990 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 22:01:28,990 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 22:01:28,991 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 22:01:28,991 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 22:01:28,991 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 22:01:28,991 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (and (or (not (<= |old(~a16~0)| 4)) (<= ~a16~0 4)) (or (not (<= 14 |old(~a8~0)|)) (<= 14 ~a8~0)) (or (not (<= |old(~a21~0)| 0)) (<= ~a21~0 0)) (or (<= 6 ~a16~0) (not (<= 6 |old(~a16~0)|))) (or (not (<= 15 |old(~a8~0)|)) (<= 15 ~a8~0))) [2020-07-20 22:01:28,991 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 22:01:28,991 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,992 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,992 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,992 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,992 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 22:01:28,992 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,992 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,992 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 22:01:28,993 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 22:01:28,993 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 22:01:28,995 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 22:01:28,995 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 22:01:28,995 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 22:01:28,995 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 22:01:28,995 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 22:01:28,995 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 22:01:28,996 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 22:01:28,996 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 22:01:28,996 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 22:01:28,996 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,996 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,996 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,996 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,997 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,997 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 22:01:28,998 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:28,999 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 22:01:28,999 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 22:01:28,999 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 22:01:28,999 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 22:01:28,999 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 22:01:28,999 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 22:01:28,999 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 22:01:29,000 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 22:01:29,000 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 22:01:29,000 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 22:01:29,000 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 22:01:29,000 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 22:01:29,000 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 22:01:29,000 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 22:01:29,001 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:29,001 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:29,001 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:29,001 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:29,001 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:29,001 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:29,001 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 22:01:29,001 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 22:01:29,001 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 22:01:29,002 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 22:01:29,002 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 22:01:29,002 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 22:01:29,002 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 22:01:29,002 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 22:01:29,002 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 22:01:29,002 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 22:01:29,002 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:01:29,003 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (<= 15 ~a8~0) [2020-07-20 22:01:29,003 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:01:29,003 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:01:29,003 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (<= 15 |old(~a8~0)|)) (<= 15 ~a8~0)) [2020-07-20 22:01:29,003 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 22:01:29,003 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (or (not (<= 15 |old(~a8~0)|)) (<= ~a21~0 0) (<= 6 ~a16~0) (<= 14 ~a8~0) (<= ~a16~0 4)) [2020-07-20 22:01:29,003 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 22:01:29,004 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 22:01:29,004 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (or (not (<= 15 |old(~a8~0)|)) (<= ~a21~0 0) (<= 6 ~a16~0) (<= 14 ~a8~0) (<= ~a16~0 4)) [2020-07-20 22:01:29,004 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 22:01:29,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:01:29 BoogieIcfgContainer [2020-07-20 22:01:29,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:01:29,032 INFO L168 Benchmark]: Toolchain (without parser) took 8999.46 ms. Allocated memory was 144.7 MB in the beginning and 327.2 MB in the end (delta: 182.5 MB). Free memory was 100.9 MB in the beginning and 282.5 MB in the end (delta: -181.7 MB). Peak memory consumption was 196.3 MB. Max. memory is 7.1 GB. [2020-07-20 22:01:29,038 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 22:01:29,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 836.22 ms. Allocated memory was 144.7 MB in the beginning and 205.0 MB in the end (delta: 60.3 MB). Free memory was 100.7 MB in the beginning and 171.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2020-07-20 22:01:29,041 INFO L168 Benchmark]: Boogie Preprocessor took 118.43 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 166.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-20 22:01:29,042 INFO L168 Benchmark]: RCFGBuilder took 1303.34 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 166.2 MB in the beginning and 181.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-07-20 22:01:29,045 INFO L168 Benchmark]: TraceAbstraction took 6734.47 ms. Allocated memory was 237.5 MB in the beginning and 327.2 MB in the end (delta: 89.7 MB). Free memory was 180.2 MB in the beginning and 282.5 MB in the end (delta: -102.4 MB). Peak memory consumption was 182.8 MB. Max. memory is 7.1 GB. [2020-07-20 22:01:29,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 836.22 ms. Allocated memory was 144.7 MB in the beginning and 205.0 MB in the end (delta: 60.3 MB). Free memory was 100.7 MB in the beginning and 171.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.43 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 166.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1303.34 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 166.2 MB in the beginning and 181.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6734.47 ms. Allocated memory was 237.5 MB in the beginning and 327.2 MB in the end (delta: 89.7 MB). Free memory was 180.2 MB in the beginning and 282.5 MB in the end (delta: -102.4 MB). Peak memory consumption was 182.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 572]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((!(15 <= \old(a8)) || a21 <= 0) || 6 <= a16) || 14 <= a8) || a16 <= 4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 757 SDtfs, 83 SDslu, 70 SDs, 0 SdLazy, 1795 SolverSat, 309 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 777 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1088occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 135 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 36 PreInvPairs, 54 NumberOfFragments, 88 HoareAnnotationTreeSize, 36 FomulaSimplifications, 96 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 124 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 782 NumberOfCodeBlocks, 782 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 777 ConstructedInterpolants, 0 QuantifiedInterpolants, 330133 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1946 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 87/87 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...