/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:01:27,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:01:27,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:01:27,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:01:27,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:01:27,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:01:27,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:01:27,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:01:27,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:01:27,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:01:27,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:01:27,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:01:27,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:01:27,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:01:27,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:01:27,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:01:27,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:01:27,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:01:27,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:01:27,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:01:27,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:01:27,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:01:27,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:01:27,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:01:27,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:01:27,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:01:27,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:01:27,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:01:27,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 22:01:27,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:01:27,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:01:27,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:01:27,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:01:27,382 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:01:27,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:01:27,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:01:27,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:01:27,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:01:27,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:01:27,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:01:27,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:01:27,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:01:27,384 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:01:27,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:01:27,384 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:01:27,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:01:27,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:01:27,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:01:27,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:01:27,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:01:27,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:01:27,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:01:27,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:01:27,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:01:27,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:01:27,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:27,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:01:27,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:01:27,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 22:01:27,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:01:27,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:01:27,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:01:27,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:01:27,707 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:01:27,708 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-20 22:01:27,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e304e7b38/09859cfe40984fe299f5158cc0d40f87/FLAGb873bba7f [2020-07-20 22:01:28,402 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:01:28,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-20 22:01:28,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e304e7b38/09859cfe40984fe299f5158cc0d40f87/FLAGb873bba7f [2020-07-20 22:01:28,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e304e7b38/09859cfe40984fe299f5158cc0d40f87 [2020-07-20 22:01:28,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:01:28,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:01:28,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:01:28,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:01:28,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:01:28,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:01:28" (1/1) ... [2020-07-20 22:01:28,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c24edc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:28, skipping insertion in model container [2020-07-20 22:01:28,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:01:28" (1/1) ... [2020-07-20 22:01:28,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:01:28,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:01:29,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:01:29,202 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:01:29,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:01:29,439 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:01:29,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:29 WrapperNode [2020-07-20 22:01:29,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:01:29,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:01:29,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:01:29,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:01:29,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:29" (1/1) ... [2020-07-20 22:01:29,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:29" (1/1) ... [2020-07-20 22:01:29,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:29" (1/1) ... [2020-07-20 22:01:29,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:29" (1/1) ... [2020-07-20 22:01:29,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:29" (1/1) ... [2020-07-20 22:01:29,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:29" (1/1) ... [2020-07-20 22:01:29,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:29" (1/1) ... [2020-07-20 22:01:29,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:01:29,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:01:29,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:01:29,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:01:29,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:01:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:01:29,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:01:29,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 22:01:29,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:01:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 22:01:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:01:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:01:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 22:01:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:01:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:01:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:01:30,830 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:01:30,830 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:01:30,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:01:30 BoogieIcfgContainer [2020-07-20 22:01:30,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:01:30,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:01:30,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:01:30,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:01:30,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:01:28" (1/3) ... [2020-07-20 22:01:30,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9bb667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:01:30, skipping insertion in model container [2020-07-20 22:01:30,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:01:29" (2/3) ... [2020-07-20 22:01:30,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9bb667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:01:30, skipping insertion in model container [2020-07-20 22:01:30,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:01:30" (3/3) ... [2020-07-20 22:01:30,852 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-07-20 22:01:30,864 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:01:30,873 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:01:30,890 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:01:30,917 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:01:30,917 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:01:30,918 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:01:30,918 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:01:30,918 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:01:30,918 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:01:30,918 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:01:30,919 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:01:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 22:01:30,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-20 22:01:30,953 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:30,954 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] [2020-07-20 22:01:30,955 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:30,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:30,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1692915649, now seen corresponding path program 1 times [2020-07-20 22:01:30,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:30,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883823255] [2020-07-20 22:01:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:31,182 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:31,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:31,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:01:31,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:31,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:01:31,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883823255] [2020-07-20 22:01:31,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:01:31,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:01:31,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445804522] [2020-07-20 22:01:31,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:01:31,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:31,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:01:31,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:31,322 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 22:01:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:32,268 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2020-07-20 22:01:32,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:01:32,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-07-20 22:01:32,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:32,294 INFO L225 Difference]: With dead ends: 547 [2020-07-20 22:01:32,294 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 22:01:32,305 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 [2020-07-20 22:01:32,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 22:01:32,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 22:01:32,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 22:01:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 400 transitions. [2020-07-20 22:01:32,430 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 400 transitions. Word has length 91 [2020-07-20 22:01:32,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:32,432 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 400 transitions. [2020-07-20 22:01:32,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:01:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 400 transitions. [2020-07-20 22:01:32,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-20 22:01:32,445 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:32,446 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] [2020-07-20 22:01:32,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:32,660 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:32,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:32,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1768869960, now seen corresponding path program 1 times [2020-07-20 22:01:32,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:32,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791278499] [2020-07-20 22:01:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:32,768 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:32,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:32,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:01:32,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:32,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:01:32,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791278499] [2020-07-20 22:01:32,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:01:32,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:01:32,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908020303] [2020-07-20 22:01:32,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:01:32,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:32,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:01:32,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:01:32,832 INFO L87 Difference]: Start difference. First operand 278 states and 400 transitions. Second operand 5 states. [2020-07-20 22:01:33,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:33,734 INFO L93 Difference]: Finished difference Result 701 states and 1021 transitions. [2020-07-20 22:01:33,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:01:33,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-07-20 22:01:33,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:33,742 INFO L225 Difference]: With dead ends: 701 [2020-07-20 22:01:33,742 INFO L226 Difference]: Without dead ends: 429 [2020-07-20 22:01:33,744 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 [2020-07-20 22:01:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-07-20 22:01:33,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 417. [2020-07-20 22:01:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-20 22:01:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 585 transitions. [2020-07-20 22:01:33,775 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 585 transitions. Word has length 101 [2020-07-20 22:01:33,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:33,776 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 585 transitions. [2020-07-20 22:01:33,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:01:33,776 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 585 transitions. [2020-07-20 22:01:33,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-07-20 22:01:33,779 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:33,785 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] [2020-07-20 22:01:33,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:33,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:33,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:33,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1027824070, now seen corresponding path program 1 times [2020-07-20 22:01:33,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:33,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160566174] [2020-07-20 22:01:33,990 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:34,100 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:34,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:34,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 22:01:34,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:34,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:01:34,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160566174] [2020-07-20 22:01:34,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:01:34,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:01:34,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943588210] [2020-07-20 22:01:34,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:01:34,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:34,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:01:34,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:34,180 INFO L87 Difference]: Start difference. First operand 417 states and 585 transitions. Second operand 3 states. [2020-07-20 22:01:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:34,837 INFO L93 Difference]: Finished difference Result 1235 states and 1769 transitions. [2020-07-20 22:01:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:01:34,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-07-20 22:01:34,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:34,855 INFO L225 Difference]: With dead ends: 1235 [2020-07-20 22:01:34,855 INFO L226 Difference]: Without dead ends: 824 [2020-07-20 22:01:34,857 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 [2020-07-20 22:01:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-07-20 22:01:34,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 689. [2020-07-20 22:01:34,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-07-20 22:01:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 919 transitions. [2020-07-20 22:01:34,925 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 919 transitions. Word has length 102 [2020-07-20 22:01:34,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:34,926 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 919 transitions. [2020-07-20 22:01:34,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:01:34,926 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 919 transitions. [2020-07-20 22:01:34,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-07-20 22:01:34,936 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:34,937 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] [2020-07-20 22:01:35,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:35,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:35,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:35,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2011229172, now seen corresponding path program 1 times [2020-07-20 22:01:35,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:35,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158371963] [2020-07-20 22:01:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:35,308 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:35,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:35,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 22:01:35,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:35,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:01:35,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158371963] [2020-07-20 22:01:35,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:01:35,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:01:35,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519824912] [2020-07-20 22:01:35,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:01:35,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:35,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:01:35,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:35,369 INFO L87 Difference]: Start difference. First operand 689 states and 919 transitions. Second operand 3 states. [2020-07-20 22:01:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:35,939 INFO L93 Difference]: Finished difference Result 1914 states and 2622 transitions. [2020-07-20 22:01:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:01:35,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-07-20 22:01:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:35,948 INFO L225 Difference]: With dead ends: 1914 [2020-07-20 22:01:35,948 INFO L226 Difference]: Without dead ends: 1231 [2020-07-20 22:01:35,950 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 [2020-07-20 22:01:35,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-07-20 22:01:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1096. [2020-07-20 22:01:35,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2020-07-20 22:01:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1474 transitions. [2020-07-20 22:01:35,988 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1474 transitions. Word has length 103 [2020-07-20 22:01:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:35,988 INFO L479 AbstractCegarLoop]: Abstraction has 1096 states and 1474 transitions. [2020-07-20 22:01:35,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:01:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1474 transitions. [2020-07-20 22:01:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-20 22:01:35,992 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:35,992 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] [2020-07-20 22:01:36,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:36,198 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:36,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:36,200 INFO L82 PathProgramCache]: Analyzing trace with hash 2004252269, now seen corresponding path program 1 times [2020-07-20 22:01:36,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:36,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261765451] [2020-07-20 22:01:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:36,303 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:36,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:36,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:01:36,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-20 22:01:36,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:01:36,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261765451] [2020-07-20 22:01:36,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:01:36,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:01:36,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052173541] [2020-07-20 22:01:36,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:01:36,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:36,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:01:36,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:36,347 INFO L87 Difference]: Start difference. First operand 1096 states and 1474 transitions. Second operand 3 states. [2020-07-20 22:01:36,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:36,952 INFO L93 Difference]: Finished difference Result 2863 states and 3930 transitions. [2020-07-20 22:01:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:01:36,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-07-20 22:01:36,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:36,965 INFO L225 Difference]: With dead ends: 2863 [2020-07-20 22:01:36,965 INFO L226 Difference]: Without dead ends: 1773 [2020-07-20 22:01:36,969 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 [2020-07-20 22:01:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2020-07-20 22:01:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1773. [2020-07-20 22:01:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1773 states. [2020-07-20 22:01:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2286 transitions. [2020-07-20 22:01:37,037 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2286 transitions. Word has length 125 [2020-07-20 22:01:37,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:37,038 INFO L479 AbstractCegarLoop]: Abstraction has 1773 states and 2286 transitions. [2020-07-20 22:01:37,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:01:37,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2286 transitions. [2020-07-20 22:01:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-20 22:01:37,046 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:37,047 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] [2020-07-20 22:01:37,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:37,263 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:37,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:37,264 INFO L82 PathProgramCache]: Analyzing trace with hash 996009503, now seen corresponding path program 1 times [2020-07-20 22:01:37,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:37,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957052534] [2020-07-20 22:01:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:37,376 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:37,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:37,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:01:37,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:37,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:01:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:37,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957052534] [2020-07-20 22:01:37,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:01:37,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 22:01:37,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380034279] [2020-07-20 22:01:37,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:01:37,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:37,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:01:37,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:01:37,538 INFO L87 Difference]: Start difference. First operand 1773 states and 2286 transitions. Second operand 6 states. [2020-07-20 22:01:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:38,642 INFO L93 Difference]: Finished difference Result 3918 states and 5288 transitions. [2020-07-20 22:01:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:01:38,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-07-20 22:01:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:38,664 INFO L225 Difference]: With dead ends: 3918 [2020-07-20 22:01:38,665 INFO L226 Difference]: Without dead ends: 2151 [2020-07-20 22:01:38,670 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 [2020-07-20 22:01:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-07-20 22:01:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1793. [2020-07-20 22:01:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2020-07-20 22:01:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2221 transitions. [2020-07-20 22:01:38,735 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2221 transitions. Word has length 145 [2020-07-20 22:01:38,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:38,735 INFO L479 AbstractCegarLoop]: Abstraction has 1793 states and 2221 transitions. [2020-07-20 22:01:38,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:01:38,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2221 transitions. [2020-07-20 22:01:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-20 22:01:38,741 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:38,741 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] [2020-07-20 22:01:38,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:38,955 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:38,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:38,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1157453929, now seen corresponding path program 1 times [2020-07-20 22:01:38,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:38,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868847276] [2020-07-20 22:01:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:39,075 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:39,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:39,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:01:39,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 22:01:39,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:01:39,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868847276] [2020-07-20 22:01:39,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:01:39,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:01:39,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451527654] [2020-07-20 22:01:39,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:01:39,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:39,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:01:39,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:01:39,110 INFO L87 Difference]: Start difference. First operand 1793 states and 2221 transitions. Second operand 3 states. [2020-07-20 22:01:39,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:39,746 INFO L93 Difference]: Finished difference Result 4672 states and 5904 transitions. [2020-07-20 22:01:39,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:01:39,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-07-20 22:01:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:39,762 INFO L225 Difference]: With dead ends: 4672 [2020-07-20 22:01:39,762 INFO L226 Difference]: Without dead ends: 2885 [2020-07-20 22:01:39,769 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 [2020-07-20 22:01:39,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-07-20 22:01:39,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2750. [2020-07-20 22:01:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2020-07-20 22:01:39,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3404 transitions. [2020-07-20 22:01:39,858 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3404 transitions. Word has length 149 [2020-07-20 22:01:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:39,859 INFO L479 AbstractCegarLoop]: Abstraction has 2750 states and 3404 transitions. [2020-07-20 22:01:39,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:01:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3404 transitions. [2020-07-20 22:01:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 22:01:39,868 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:01:39,869 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] [2020-07-20 22:01:40,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:40,083 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:01:40,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:01:40,084 INFO L82 PathProgramCache]: Analyzing trace with hash 152592045, now seen corresponding path program 1 times [2020-07-20 22:01:40,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:01:40,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942344028] [2020-07-20 22:01:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:40,198 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:01:40,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:01:40,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 22:01:40,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:01:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:40,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:01:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:01:40,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942344028] [2020-07-20 22:01:40,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:01:40,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 22:01:40,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674385082] [2020-07-20 22:01:40,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 22:01:40,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:01:40,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 22:01:40,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:01:40,327 INFO L87 Difference]: Start difference. First operand 2750 states and 3404 transitions. Second operand 7 states. [2020-07-20 22:01:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:01:41,109 INFO L93 Difference]: Finished difference Result 5550 states and 6987 transitions. [2020-07-20 22:01:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:01:41,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-07-20 22:01:41,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:01:41,110 INFO L225 Difference]: With dead ends: 5550 [2020-07-20 22:01:41,110 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:01:41,125 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 [2020-07-20 22:01:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:01:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:01:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:01:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:01:41,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2020-07-20 22:01:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:01:41,128 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:01:41,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 22:01:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:01:41,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:01:41,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:01:41,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:01:42,624 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2020-07-20 22:01:42,926 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-07-20 22:01:43,222 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-07-20 22:01:43,226 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:01:43,227 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)|)) [2020-07-20 22:01:43,227 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:01:43,227 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 22:01:43,227 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 22:01:43,227 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,228 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,228 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,228 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,228 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,228 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,228 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 22:01:43,229 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 22:01:43,229 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 22:01:43,229 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 22:01:43,229 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 22:01:43,229 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 22:01:43,229 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 22:01:43,229 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 22:01:43,229 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 22:01:43,230 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 22:01:43,230 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,230 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,230 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,230 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,230 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,230 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,230 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 22:01:43,231 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 22:01:43,231 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 22:01:43,231 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 22:01:43,231 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 22:01:43,231 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 22:01:43,231 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 22:01:43,231 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 22:01:43,232 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 22:01:43,232 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 22:01:43,232 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 22:01:43,232 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 431) no Hoare annotation was computed. [2020-07-20 22:01:43,232 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 22:01:43,232 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 22:01:43,232 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 22:01:43,233 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 22:01:43,233 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,233 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,233 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,233 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,233 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,233 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 22:01:43,234 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 22:01:43,234 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 22:01:43,234 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 22:01:43,234 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 22:01:43,234 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 22:01:43,234 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 22:01:43,234 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 22:01:43,235 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 22:01:43,235 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,235 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,235 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,235 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,235 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,235 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 22:01:43,235 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 22:01:43,236 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 22:01:43,236 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 22:01:43,236 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 22:01:43,236 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 22:01:43,236 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 22:01:43,236 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 22:01:43,236 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 22:01:43,236 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 22:01:43,237 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 22:01:43,237 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 22:01:43,237 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 22:01:43,237 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,237 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,237 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,237 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,238 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,238 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 22:01:43,238 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 22:01:43,238 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 22:01:43,238 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 22:01:43,238 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 22:01:43,238 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 22:01:43,238 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 22:01:43,239 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 22:01:43,239 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 22:01:43,239 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,239 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,239 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,239 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,239 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,239 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,240 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 22:01:43,240 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,240 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 22:01:43,240 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 22:01:43,240 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 22:01:43,240 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 22:01:43,240 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 22:01:43,240 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 22:01:43,240 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 22:01:43,241 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 22:01:43,241 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 22:01:43,241 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 22:01:43,241 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 22:01:43,241 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 22:01:43,241 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 22:01:43,241 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,241 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,242 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,242 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,242 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,242 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 22:01:43,242 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 22:01:43,242 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 22:01:43,242 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 22:01:43,242 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 22:01:43,243 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 22:01:43,243 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 22:01:43,243 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 22:01:43,243 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,243 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,243 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,243 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,243 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,243 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 22:01:43,244 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 22:01:43,244 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 22:01:43,244 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 22:01:43,244 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 22:01:43,244 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 22:01:43,244 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 22:01:43,244 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 22:01:43,245 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 22:01:43,245 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 22:01:43,245 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)))) [2020-07-20 22:01:43,245 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 22:01:43,245 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,246 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,246 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,246 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,246 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 22:01:43,246 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,246 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,246 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 22:01:43,246 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 22:01:43,247 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 22:01:43,247 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 22:01:43,247 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 22:01:43,247 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 22:01:43,247 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 22:01:43,247 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 22:01:43,247 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 22:01:43,247 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 22:01:43,247 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 22:01:43,248 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 22:01:43,248 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,248 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,248 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,248 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,248 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,248 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 22:01:43,248 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,248 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 22:01:43,249 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 22:01:43,249 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 22:01:43,249 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 22:01:43,249 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 22:01:43,249 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 22:01:43,249 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 22:01:43,249 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 22:01:43,249 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 22:01:43,250 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 22:01:43,250 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 22:01:43,250 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 22:01:43,250 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 22:01:43,250 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 22:01:43,250 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,250 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,250 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,250 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,251 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,251 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 22:01:43,251 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 22:01:43,251 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 22:01:43,251 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 22:01:43,251 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 22:01:43,251 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 22:01:43,251 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 22:01:43,252 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 22:01:43,252 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 22:01:43,252 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 22:01:43,252 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 22:01:43,252 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:01:43,252 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)) [2020-07-20 22:01:43,252 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:01:43,252 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:01:43,253 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))) [2020-07-20 22:01:43,253 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 22:01:43,253 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)))) [2020-07-20 22:01:43,253 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 22:01:43,253 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 22:01:43,254 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)))) [2020-07-20 22:01:43,254 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 22:01:43,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:01:43 BoogieIcfgContainer [2020-07-20 22:01:43,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:01:43,284 INFO L168 Benchmark]: Toolchain (without parser) took 14660.01 ms. Allocated memory was 137.4 MB in the beginning and 425.2 MB in the end (delta: 287.8 MB). Free memory was 100.7 MB in the beginning and 273.9 MB in the end (delta: -173.3 MB). Peak memory consumption was 257.0 MB. Max. memory is 7.1 GB. [2020-07-20 22:01:43,285 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 22:01:43,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 813.40 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 100.5 MB in the beginning and 170.3 MB in the end (delta: -69.9 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2020-07-20 22:01:43,286 INFO L168 Benchmark]: Boogie Preprocessor took 153.30 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 165.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-20 22:01:43,287 INFO L168 Benchmark]: RCFGBuilder took 1244.53 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.3 MB in the beginning and 179.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2020-07-20 22:01:43,289 INFO L168 Benchmark]: TraceAbstraction took 12439.25 ms. Allocated memory was 235.4 MB in the beginning and 425.2 MB in the end (delta: 189.8 MB). Free memory was 178.1 MB in the beginning and 273.9 MB in the end (delta: -95.8 MB). Peak memory consumption was 236.4 MB. Max. memory is 7.1 GB. [2020-07-20 22:01:43,293 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 813.40 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 100.5 MB in the beginning and 170.3 MB in the end (delta: -69.9 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.30 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 165.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1244.53 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.3 MB in the beginning and 179.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12439.25 ms. Allocated memory was 235.4 MB in the beginning and 425.2 MB in the end (delta: 189.8 MB). Free memory was 178.1 MB in the beginning and 273.9 MB in the end (delta: -95.8 MB). Peak memory consumption was 236.4 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: 10.4s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 632 SDtfs, 1396 SDslu, 184 SDs, 0 SdLazy, 3763 SolverSat, 769 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1279 GetRequests, 1252 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s 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, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 973 NumberOfCodeBlocks, 973 NumberOfCodeBlocksAsserted, 32 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...