/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:32:36,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:32:36,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:32:36,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:32:36,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:32:36,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:32:36,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:32:36,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:32:36,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:32:36,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:32:36,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:32:36,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:32:36,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:32:36,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:32:36,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:32:36,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:32:36,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:32:36,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:32:36,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:32:36,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:32:36,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:32:36,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:32:36,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:32:36,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:32:36,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:32:36,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:32:36,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:32:36,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:32:36,895 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 16:32:36,909 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:32:36,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:32:36,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:32:36,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:32:36,910 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:32:36,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:32:36,911 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:32:36,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:32:36,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:32:36,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:32:36,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:32:36,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:32:36,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:32:36,912 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:32:36,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:32:36,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:32:36,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:32:36,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:32:36,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:32:36,913 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:32:36,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:32:36,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:32:36,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:32:36,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:32:36,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:32:36,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:32:36,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:32:36,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:32:36,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:32:36,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:32:37,193 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:32:37,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:32:37,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:32:37,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:32:37,211 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:32:37,211 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-21 16:32:37,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/decf8bca5/7d855fb51fe34aa287cd15436028a100/FLAG5a9afd768 [2020-07-21 16:32:37,840 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:32:37,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-21 16:32:37,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/decf8bca5/7d855fb51fe34aa287cd15436028a100/FLAG5a9afd768 [2020-07-21 16:32:38,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/decf8bca5/7d855fb51fe34aa287cd15436028a100 [2020-07-21 16:32:38,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:32:38,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:32:38,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:32:38,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:32:38,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:32:38,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:32:38" (1/1) ... [2020-07-21 16:32:38,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1941cf0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:32:38, skipping insertion in model container [2020-07-21 16:32:38,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:32:38" (1/1) ... [2020-07-21 16:32:38,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:32:38,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:32:38,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:32:38,720 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:32:38,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:32:38,901 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:32:38,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:32:38 WrapperNode [2020-07-21 16:32:38,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:32:38,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:32:38,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:32:38,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:32:38,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:32:38" (1/1) ... [2020-07-21 16:32:38,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:32:38" (1/1) ... [2020-07-21 16:32:38,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:32:38" (1/1) ... [2020-07-21 16:32:38,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:32:38" (1/1) ... [2020-07-21 16:32:39,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:32:38" (1/1) ... [2020-07-21 16:32:39,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:32:38" (1/1) ... [2020-07-21 16:32:39,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:32:38" (1/1) ... [2020-07-21 16:32:39,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:32:39,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:32:39,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:32:39,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:32:39,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:32:38" (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 16:32:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:32:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:32:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 16:32:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:32:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 16:32:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:32:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:32:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 16:32:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:32:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:32:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:32:40,194 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:32:40,195 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 16:32:40,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:32:40 BoogieIcfgContainer [2020-07-21 16:32:40,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:32:40,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:32:40,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:32:40,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:32:40,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:32:38" (1/3) ... [2020-07-21 16:32:40,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415d3c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:32:40, skipping insertion in model container [2020-07-21 16:32:40,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:32:38" (2/3) ... [2020-07-21 16:32:40,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415d3c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:32:40, skipping insertion in model container [2020-07-21 16:32:40,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:32:40" (3/3) ... [2020-07-21 16:32:40,209 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-07-21 16:32:40,219 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:32:40,227 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:32:40,241 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:32:40,266 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:32:40,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:32:40,266 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:32:40,267 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:32:40,267 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:32:40,267 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:32:40,267 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:32:40,267 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:32:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 16:32:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-21 16:32:40,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:32:40,302 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] [2020-07-21 16:32:40,302 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:32:40,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:32:40,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1692915649, now seen corresponding path program 1 times [2020-07-21 16:32:40,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:32:40,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119063679] [2020-07-21 16:32:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:32:40,495 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:32:40,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:32:40,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:32:40,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:32:40,590 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 16:32:40,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:32:40,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119063679] [2020-07-21 16:32:40,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:32:40,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:32:40,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596364912] [2020-07-21 16:32:40,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:32:40,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:32:40,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:32:40,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:32:40,616 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-21 16:32:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:32:41,410 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2020-07-21 16:32:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:32:41,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-07-21 16:32:41,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:32:41,427 INFO L225 Difference]: With dead ends: 547 [2020-07-21 16:32:41,427 INFO L226 Difference]: Without dead ends: 278 [2020-07-21 16:32:41,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 16:32:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-21 16:32:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-21 16:32:41,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-21 16:32:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 400 transitions. [2020-07-21 16:32:41,502 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 400 transitions. Word has length 91 [2020-07-21 16:32:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:32:41,503 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 400 transitions. [2020-07-21 16:32:41,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:32:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 400 transitions. [2020-07-21 16:32:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-21 16:32:41,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:32:41,509 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] [2020-07-21 16:32:41,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:32:41,716 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:32:41,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:32:41,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1768869960, now seen corresponding path program 1 times [2020-07-21 16:32:41,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:32:41,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204992545] [2020-07-21 16:32:41,718 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:32:41,826 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:32:41,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:32:41,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:32:41,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:32:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:32:41,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:32:41,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204992545] [2020-07-21 16:32:41,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:32:41,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:32:41,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021669040] [2020-07-21 16:32:41,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:32:41,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:32:41,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:32:41,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:32:41,943 INFO L87 Difference]: Start difference. First operand 278 states and 400 transitions. Second operand 5 states. [2020-07-21 16:32:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:32:42,852 INFO L93 Difference]: Finished difference Result 701 states and 1021 transitions. [2020-07-21 16:32:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 16:32:42,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-07-21 16:32:42,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:32:42,860 INFO L225 Difference]: With dead ends: 701 [2020-07-21 16:32:42,860 INFO L226 Difference]: Without dead ends: 429 [2020-07-21 16:32:42,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 16:32:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-07-21 16:32:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 417. [2020-07-21 16:32:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 16:32:42,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 585 transitions. [2020-07-21 16:32:42,904 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 585 transitions. Word has length 101 [2020-07-21 16:32:42,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:32:42,904 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 585 transitions. [2020-07-21 16:32:42,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:32:42,905 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 585 transitions. [2020-07-21 16:32:42,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-07-21 16:32:42,908 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:32:42,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:32:43,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:32:43,123 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:32:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:32:43,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1027824070, now seen corresponding path program 1 times [2020-07-21 16:32:43,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:32:43,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970793209] [2020-07-21 16:32:43,125 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:32:43,287 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:32:43,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:32:43,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 16:32:43,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:32:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:32:43,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:32:43,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970793209] [2020-07-21 16:32:43,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:32:43,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:32:43,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117016807] [2020-07-21 16:32:43,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:32:43,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:32:43,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:32:43,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:32:43,327 INFO L87 Difference]: Start difference. First operand 417 states and 585 transitions. Second operand 3 states. [2020-07-21 16:32:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:32:43,908 INFO L93 Difference]: Finished difference Result 1235 states and 1769 transitions. [2020-07-21 16:32:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:32:43,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-07-21 16:32:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:32:43,915 INFO L225 Difference]: With dead ends: 1235 [2020-07-21 16:32:43,915 INFO L226 Difference]: Without dead ends: 824 [2020-07-21 16:32:43,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 16:32:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-07-21 16:32:43,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 689. [2020-07-21 16:32:43,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-07-21 16:32:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 919 transitions. [2020-07-21 16:32:43,958 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 919 transitions. Word has length 102 [2020-07-21 16:32:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:32:43,959 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 919 transitions. [2020-07-21 16:32:43,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:32:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 919 transitions. [2020-07-21 16:32:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-07-21 16:32:43,964 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:32:43,964 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 16:32:44,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:32:44,180 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:32:44,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:32:44,181 INFO L82 PathProgramCache]: Analyzing trace with hash -2011229172, now seen corresponding path program 1 times [2020-07-21 16:32:44,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:32:44,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108397264] [2020-07-21 16:32:44,183 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:32:44,274 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:32:44,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:32:44,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 16:32:44,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:32:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:32:44,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:32:44,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108397264] [2020-07-21 16:32:44,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:32:44,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:32:44,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615486604] [2020-07-21 16:32:44,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:32:44,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:32:44,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:32:44,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:32:44,348 INFO L87 Difference]: Start difference. First operand 689 states and 919 transitions. Second operand 3 states. [2020-07-21 16:32:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:32:44,896 INFO L93 Difference]: Finished difference Result 1914 states and 2622 transitions. [2020-07-21 16:32:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:32:44,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-07-21 16:32:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:32:44,905 INFO L225 Difference]: With dead ends: 1914 [2020-07-21 16:32:44,905 INFO L226 Difference]: Without dead ends: 1231 [2020-07-21 16:32:44,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 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 16:32:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-07-21 16:32:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1096. [2020-07-21 16:32:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2020-07-21 16:32:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1474 transitions. [2020-07-21 16:32:44,949 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1474 transitions. Word has length 103 [2020-07-21 16:32:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:32:44,949 INFO L479 AbstractCegarLoop]: Abstraction has 1096 states and 1474 transitions. [2020-07-21 16:32:44,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:32:44,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1474 transitions. [2020-07-21 16:32:44,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-21 16:32:44,956 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:32:44,956 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:45,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:32:45,171 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:32:45,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:32:45,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2004252269, now seen corresponding path program 1 times [2020-07-21 16:32:45,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:32:45,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258444387] [2020-07-21 16:32:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:32:45,281 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:32:45,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:32:45,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:32:45,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:32:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-21 16:32:45,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:32:45,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258444387] [2020-07-21 16:32:45,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:32:45,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:32:45,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887095519] [2020-07-21 16:32:45,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:32:45,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:32:45,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:32:45,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:32:45,320 INFO L87 Difference]: Start difference. First operand 1096 states and 1474 transitions. Second operand 3 states. [2020-07-21 16:32:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:32:45,843 INFO L93 Difference]: Finished difference Result 2863 states and 3930 transitions. [2020-07-21 16:32:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:32:45,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-07-21 16:32:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:32:45,855 INFO L225 Difference]: With dead ends: 2863 [2020-07-21 16:32:45,855 INFO L226 Difference]: Without dead ends: 1773 [2020-07-21 16:32:45,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 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 16:32:45,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2020-07-21 16:32:45,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1773. [2020-07-21 16:32:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1773 states. [2020-07-21 16:32:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2286 transitions. [2020-07-21 16:32:45,922 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2286 transitions. Word has length 125 [2020-07-21 16:32:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:32:45,923 INFO L479 AbstractCegarLoop]: Abstraction has 1773 states and 2286 transitions. [2020-07-21 16:32:45,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:32:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2286 transitions. [2020-07-21 16:32:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-21 16:32:45,930 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:32:45,930 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 16:32:46,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:32:46,144 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:32:46,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:32:46,144 INFO L82 PathProgramCache]: Analyzing trace with hash 996009503, now seen corresponding path program 1 times [2020-07-21 16:32:46,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:32:46,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359802571] [2020-07-21 16:32:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:32:46,307 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:32:46,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:32:46,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:32:46,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:32:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:32:46,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:32:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:32:46,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359802571] [2020-07-21 16:32:46,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:32:46,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 16:32:46,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066722994] [2020-07-21 16:32:46,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:32:46,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:32:46,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:32:46,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:32:46,489 INFO L87 Difference]: Start difference. First operand 1773 states and 2286 transitions. Second operand 6 states. [2020-07-21 16:32:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:32:47,437 INFO L93 Difference]: Finished difference Result 3918 states and 5288 transitions. [2020-07-21 16:32:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 16:32:47,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-07-21 16:32:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:32:47,454 INFO L225 Difference]: With dead ends: 3918 [2020-07-21 16:32:47,455 INFO L226 Difference]: Without dead ends: 2151 [2020-07-21 16:32:47,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 286 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 16:32:47,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-07-21 16:32:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1793. [2020-07-21 16:32:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2020-07-21 16:32:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2221 transitions. [2020-07-21 16:32:47,549 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2221 transitions. Word has length 145 [2020-07-21 16:32:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:32:47,549 INFO L479 AbstractCegarLoop]: Abstraction has 1793 states and 2221 transitions. [2020-07-21 16:32:47,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:32:47,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2221 transitions. [2020-07-21 16:32:47,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-21 16:32:47,554 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:32:47,554 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:47,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:32:47,770 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:32:47,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:32:47,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1157453929, now seen corresponding path program 1 times [2020-07-21 16:32:47,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:32:47,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459530603] [2020-07-21 16:32:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:32:47,908 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:32:47,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:32:47,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:32:47,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:32:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 16:32:47,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:32:47,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459530603] [2020-07-21 16:32:47,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:32:47,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:32:47,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456608101] [2020-07-21 16:32:47,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:32:47,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:32:47,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:32:47,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:32:47,947 INFO L87 Difference]: Start difference. First operand 1793 states and 2221 transitions. Second operand 3 states. [2020-07-21 16:32:48,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:32:48,509 INFO L93 Difference]: Finished difference Result 4672 states and 5904 transitions. [2020-07-21 16:32:48,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:32:48,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-07-21 16:32:48,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:32:48,526 INFO L225 Difference]: With dead ends: 4672 [2020-07-21 16:32:48,526 INFO L226 Difference]: Without dead ends: 2885 [2020-07-21 16:32:48,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 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 16:32:48,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-07-21 16:32:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2750. [2020-07-21 16:32:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2020-07-21 16:32:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3404 transitions. [2020-07-21 16:32:48,627 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3404 transitions. Word has length 149 [2020-07-21 16:32:48,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:32:48,628 INFO L479 AbstractCegarLoop]: Abstraction has 2750 states and 3404 transitions. [2020-07-21 16:32:48,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:32:48,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3404 transitions. [2020-07-21 16:32:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-21 16:32:48,636 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:32:48,636 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:32:48,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:32:48,850 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:32:48,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:32:48,851 INFO L82 PathProgramCache]: Analyzing trace with hash 152592045, now seen corresponding path program 1 times [2020-07-21 16:32:48,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:32:48,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126509012] [2020-07-21 16:32:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:32:48,961 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:32:48,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:32:48,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 16:32:48,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:32:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:32:49,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:32:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:32:49,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126509012] [2020-07-21 16:32:49,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:32:49,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 16:32:49,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989329263] [2020-07-21 16:32:49,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 16:32:49,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:32:49,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 16:32:49,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:32:49,126 INFO L87 Difference]: Start difference. First operand 2750 states and 3404 transitions. Second operand 7 states. [2020-07-21 16:32:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:32:49,835 INFO L93 Difference]: Finished difference Result 5550 states and 6987 transitions. [2020-07-21 16:32:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 16:32:49,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-07-21 16:32:49,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:32:49,840 INFO L225 Difference]: With dead ends: 5550 [2020-07-21 16:32:49,840 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:32:49,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 16:32:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:32:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:32:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:32:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:32:49,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2020-07-21 16:32:49,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:32:49,856 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:32:49,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 16:32:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:32:49,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:32:50,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:32:50,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:32:51,279 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2020-07-21 16:32:51,557 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-07-21 16:32:51,832 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-07-21 16:32:51,836 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:32:51,836 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a16~0 |old(~a16~0)|) (= ~a17~0 |old(~a17~0)|)) [2020-07-21 16:32:51,836 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:32:51,837 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 16:32:51,837 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 16:32:51,837 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,837 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,837 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,837 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,838 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,838 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,838 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 16:32:51,838 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 16:32:51,838 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 16:32:51,838 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 16:32:51,838 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 16:32:51,838 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 16:32:51,839 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 16:32:51,839 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 16:32:51,839 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 16:32:51,839 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 16:32:51,839 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,839 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,839 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,840 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,840 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,840 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,840 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 16:32:51,840 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 16:32:51,840 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 16:32:51,840 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 16:32:51,840 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 16:32:51,841 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 16:32:51,841 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 16:32:51,841 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 16:32:51,841 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 16:32:51,841 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 16:32:51,841 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 16:32:51,841 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 431) no Hoare annotation was computed. [2020-07-21 16:32:51,842 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 16:32:51,842 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 16:32:51,842 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 16:32:51,842 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 16:32:51,842 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,842 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,842 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,843 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,843 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,843 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 16:32:51,843 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 16:32:51,843 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 16:32:51,843 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 16:32:51,843 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 16:32:51,843 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 16:32:51,843 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 16:32:51,843 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 16:32:51,844 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 16:32:51,844 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,844 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,844 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,844 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,844 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,844 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 16:32:51,844 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 16:32:51,845 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 16:32:51,845 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 16:32:51,845 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 16:32:51,845 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 16:32:51,845 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 16:32:51,845 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 16:32:51,845 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 16:32:51,845 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 16:32:51,845 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 16:32:51,846 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 16:32:51,846 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 16:32:51,846 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,846 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,846 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,846 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,846 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,846 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,847 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,848 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,848 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,848 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 16:32:51,848 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,848 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 16:32:51,848 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 16:32:51,848 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 16:32:51,848 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 16:32:51,848 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 16:32:51,848 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 16:32:51,849 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 16:32:51,850 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 16:32:51,851 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 16:32:51,851 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 16:32:51,851 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 16:32:51,851 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 16:32:51,851 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 16:32:51,851 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 16:32:51,851 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 16:32:51,851 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 16:32:51,851 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse12 (not (<= |old(~a16~0)| 5))) (.cse7 (not (= 1 |old(~a20~0)|))) (.cse6 (= 1 ~a20~0)) (.cse1 (<= ~a16~0 |old(~a16~0)|)) (.cse11 (<= ~a16~0 5))) (let ((.cse2 (= ~a17~0 |old(~a17~0)|)) (.cse8 (not (<= |old(~a16~0)| 4))) (.cse15 (<= 15 ~a8~0)) (.cse3 (<= 5 ~a16~0)) (.cse4 (not (<= 5 |old(~a16~0)|))) (.cse10 (let ((.cse17 (= 1 ~a7~0))) (or (and .cse1 .cse17 .cse6) (and .cse1 .cse17 .cse11)))) (.cse14 (= 1 ~a17~0)) (.cse9 (let ((.cse16 (not (= 1 |old(~a7~0)|)))) (and (or .cse16 .cse12) (or .cse7 .cse16)))) (.cse13 (not (= 1 |old(~a17~0)|))) (.cse0 (not (<= 15 |old(~a8~0)|))) (.cse5 (not (<= |old(~a17~0)| 0)))) (and (or .cse0 (and .cse1 .cse2 .cse3) .cse4 .cse5) (or (and .cse1 .cse2 .cse6) .cse7 .cse8) (or .cse9 (and .cse10 .cse2) .cse5) (or (and .cse2 .cse11 .cse3) .cse12 .cse4 .cse5) (or .cse7 .cse13 .cse4 (and .cse1 .cse14 .cse3 .cse6)) (or (and .cse1 .cse2) .cse8 .cse5) (or (and .cse1 .cse14 .cse15) .cse0 .cse13) (or .cse0 .cse15 .cse5) (or .cse0 .cse3 .cse13 .cse4) (or (and .cse10 .cse14) .cse9 .cse13) (or .cse7 .cse0 .cse6 .cse5)))) [2020-07-21 16:32:51,851 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 16:32:51,851 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,852 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,852 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,852 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,852 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 16:32:51,852 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,852 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,852 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 16:32:51,852 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 16:32:51,852 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 16:32:51,852 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 16:32:51,852 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 16:32:51,853 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 16:32:51,853 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 16:32:51,853 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 16:32:51,853 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 16:32:51,853 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 16:32:51,853 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 16:32:51,853 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 16:32:51,853 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,854 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,854 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,854 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,854 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,854 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 16:32:51,854 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,854 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 16:32:51,854 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 16:32:51,854 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,855 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 16:32:51,856 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 16:32:51,857 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 16:32:51,857 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:32:51,857 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 1 ~a17~0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0) (= 1 ~a20~0)) [2020-07-21 16:32:51,857 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:32:51,857 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:32:51,857 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a17~0)|)) (not (<= 5 |old(~a16~0)|)) (and (= 1 ~a17~0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0) (= 1 ~a20~0))) [2020-07-21 16:32:51,857 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 16:32:51,857 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse1 (<= ~a16~0 5)) (.cse2 (= 1 ~a20~0))) (let ((.cse4 (let ((.cse6 (= 1 ~a7~0))) (or (and .cse6 .cse1) (and .cse6 .cse2)))) (.cse0 (<= ~a17~0 0)) (.cse5 (<= 15 ~a8~0)) (.cse3 (= 1 ~a17~0))) (or (and .cse0 .cse1) (and .cse2 (<= ~a16~0 4)) (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse3 .cse4) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a17~0)|)) (not (<= 5 |old(~a16~0)|)) (and .cse3 .cse2) (and .cse0 .cse4) (and .cse0 .cse5) (and .cse5 .cse3)))) [2020-07-21 16:32:51,857 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 16:32:51,857 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 16:32:51,858 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse1 (<= ~a16~0 5)) (.cse2 (= 1 ~a20~0))) (let ((.cse4 (let ((.cse6 (= 1 ~a7~0))) (or (and .cse6 .cse1) (and .cse6 .cse2)))) (.cse0 (<= ~a17~0 0)) (.cse5 (<= 15 ~a8~0)) (.cse3 (= 1 ~a17~0))) (or (and .cse0 .cse1) (and .cse2 (<= ~a16~0 4)) (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse3 .cse4) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a17~0)|)) (not (<= 5 |old(~a16~0)|)) (and .cse3 .cse2) (and .cse0 .cse4) (and .cse0 .cse5) (and .cse5 .cse3)))) [2020-07-21 16:32:51,858 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 16:32:51,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:32:51 BoogieIcfgContainer [2020-07-21 16:32:51,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:32:51,880 INFO L168 Benchmark]: Toolchain (without parser) took 13755.28 ms. Allocated memory was 145.2 MB in the beginning and 404.2 MB in the end (delta: 259.0 MB). Free memory was 101.0 MB in the beginning and 138.1 MB in the end (delta: -37.1 MB). Peak memory consumption was 233.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:32:51,881 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 16:32:51,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.02 ms. Allocated memory was 145.2 MB in the beginning and 204.5 MB in the end (delta: 59.2 MB). Free memory was 100.6 MB in the beginning and 170.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2020-07-21 16:32:51,882 INFO L168 Benchmark]: Boogie Preprocessor took 142.75 ms. Allocated memory is still 204.5 MB. Free memory was 170.5 MB in the beginning and 165.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-21 16:32:51,883 INFO L168 Benchmark]: RCFGBuilder took 1155.29 ms. Allocated memory was 204.5 MB in the beginning and 238.0 MB in the end (delta: 33.6 MB). Free memory was 165.6 MB in the beginning and 179.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:32:51,884 INFO L168 Benchmark]: TraceAbstraction took 11676.24 ms. Allocated memory was 238.0 MB in the beginning and 404.2 MB in the end (delta: 166.2 MB). Free memory was 179.3 MB in the beginning and 138.1 MB in the end (delta: 41.2 MB). Peak memory consumption was 218.7 MB. Max. memory is 7.1 GB. [2020-07-21 16:32:51,887 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 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 775.02 ms. Allocated memory was 145.2 MB in the beginning and 204.5 MB in the end (delta: 59.2 MB). Free memory was 100.6 MB in the beginning and 170.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.75 ms. Allocated memory is still 204.5 MB. Free memory was 170.5 MB in the beginning and 165.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1155.29 ms. Allocated memory was 204.5 MB in the beginning and 238.0 MB in the end (delta: 33.6 MB). Free memory was 165.6 MB in the beginning and 179.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11676.24 ms. Allocated memory was 238.0 MB in the beginning and 404.2 MB in the end (delta: 166.2 MB). Free memory was 179.3 MB in the beginning and 138.1 MB in the end (delta: 41.2 MB). Peak memory consumption was 218.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 431]: 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: (((((((((((a17 <= 0 && a16 <= 5) || (1 == a20 && a16 <= 4)) || !(1 == \old(a20))) || !(15 <= \old(a8))) || (1 == a17 && ((1 == a7 && a16 <= 5) || (1 == a7 && 1 == a20)))) || !(\old(a16) <= 5)) || !(1 == \old(a17))) || !(5 <= \old(a16))) || (1 == a17 && 1 == a20)) || (a17 <= 0 && ((1 == a7 && a16 <= 5) || (1 == a7 && 1 == a20)))) || (a17 <= 0 && 15 <= a8)) || (15 <= a8 && 1 == a17) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.8s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 632 SDtfs, 1396 SDslu, 184 SDs, 0 SdLazy, 3763 SolverSat, 769 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1279 GetRequests, 1252 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2750occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 775 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 98 PreInvPairs, 152 NumberOfFragments, 518 HoareAnnotationTreeSize, 98 FomulaSimplifications, 5840 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1506 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 973 NumberOfCodeBlocks, 973 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1265 ConstructedInterpolants, 0 QuantifiedInterpolants, 394323 SizeOfPredicates, 10 NumberOfNonLiveVariables, 3007 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 373/381 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...