/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:45:42,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:45:42,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:45:42,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:45:42,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:45:42,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:45:42,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:45:42,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:45:42,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:45:42,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:45:42,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:45:42,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:45:42,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:45:42,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:45:42,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:45:42,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:45:42,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:45:42,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:45:42,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:45:42,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:45:42,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:45:42,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:45:42,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:45:42,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:45:42,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 13:45:42,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:45:42,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:45:42,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:45:42,324 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 13:45:42,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:45:42,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:45:42,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:45:42,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:45:42,341 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:45:42,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:45:42,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:45:42,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:45:42,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:45:42,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:45:42,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:45:42,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:45:42,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:45:42,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:45:42,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:45:42,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:45:42,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:45:42,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:45:42,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:45:42,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:45:42,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:45:42,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:45:42,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:45:42,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:45:42,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:45:42,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:45:42,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:42,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:45:42,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:45:42,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 13:45:42,637 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:45:42,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:45:42,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:45:42,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:45:42,656 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:45:42,657 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-07-21 13:45:42,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359f9cd35/a863c16f017047a2ae7423329fdbcc9a/FLAG0e75905ea [2020-07-21 13:45:43,309 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:45:43,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-07-21 13:45:43,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359f9cd35/a863c16f017047a2ae7423329fdbcc9a/FLAG0e75905ea [2020-07-21 13:45:43,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359f9cd35/a863c16f017047a2ae7423329fdbcc9a [2020-07-21 13:45:43,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:45:43,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:45:43,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:45:43,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:45:43,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:45:43,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:45:43" (1/1) ... [2020-07-21 13:45:43,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6d448f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:45:43, skipping insertion in model container [2020-07-21 13:45:43,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:45:43" (1/1) ... [2020-07-21 13:45:43,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:45:43,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:45:44,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:45:44,268 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:45:44,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:45:44,387 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:45:44,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:45:44 WrapperNode [2020-07-21 13:45:44,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:45:44,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:45:44,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:45:44,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:45:44,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:45:44" (1/1) ... [2020-07-21 13:45:44,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:45:44" (1/1) ... [2020-07-21 13:45:44,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:45:44" (1/1) ... [2020-07-21 13:45:44,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:45:44" (1/1) ... [2020-07-21 13:45:44,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:45:44" (1/1) ... [2020-07-21 13:45:44,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:45:44" (1/1) ... [2020-07-21 13:45:44,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:45:44" (1/1) ... [2020-07-21 13:45:44,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:45:44,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:45:44,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:45:44,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:45:44,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:45:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:45:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:45:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:45:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 13:45:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:45:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 13:45:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:45:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:45:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 13:45:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:45:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:45:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:45:45,808 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:45:45,808 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 13:45:45,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:45:45 BoogieIcfgContainer [2020-07-21 13:45:45,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:45:45,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:45:45,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:45:45,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:45:45,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:45:43" (1/3) ... [2020-07-21 13:45:45,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28df05f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:45:45, skipping insertion in model container [2020-07-21 13:45:45,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:45:44" (2/3) ... [2020-07-21 13:45:45,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28df05f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:45:45, skipping insertion in model container [2020-07-21 13:45:45,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:45:45" (3/3) ... [2020-07-21 13:45:45,827 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-07-21 13:45:45,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:45:45,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:45:45,869 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:45:45,899 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:45:45,900 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:45:45,900 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:45:45,900 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:45:45,900 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:45:45,900 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:45:45,901 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:45:45,901 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:45:45,928 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 13:45:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-21 13:45:45,941 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:45:45,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:45:45,943 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:45:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:45:45,950 INFO L82 PathProgramCache]: Analyzing trace with hash -897711290, now seen corresponding path program 1 times [2020-07-21 13:45:45,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:45:45,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229057708] [2020-07-21 13:45:45,961 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:46,157 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:45:46,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:45:46,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:45:46,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:45:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:45:46,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:45:46,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229057708] [2020-07-21 13:45:46,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:45:46,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:45:46,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545342020] [2020-07-21 13:45:46,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:45:46,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:45:46,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:45:46,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:45:46,301 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-21 13:45:47,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:45:47,258 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-21 13:45:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:45:47,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-07-21 13:45:47,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:45:47,278 INFO L225 Difference]: With dead ends: 572 [2020-07-21 13:45:47,278 INFO L226 Difference]: Without dead ends: 278 [2020-07-21 13:45:47,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:45:47,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-21 13:45:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-21 13:45:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-21 13:45:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-21 13:45:47,363 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 110 [2020-07-21 13:45:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:45:47,365 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-21 13:45:47,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:45:47,365 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-21 13:45:47,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-07-21 13:45:47,371 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:45:47,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:45:47,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:47,586 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:45:47,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:45:47,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1715018595, now seen corresponding path program 1 times [2020-07-21 13:45:47,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:45:47,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763923547] [2020-07-21 13:45:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:47,701 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:45:47,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:45:47,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:45:47,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:45:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:45:47,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:45:47,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763923547] [2020-07-21 13:45:47,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:45:47,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:45:47,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774855272] [2020-07-21 13:45:47,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:45:47,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:45:47,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:45:47,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:45:47,800 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 5 states. [2020-07-21 13:45:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:45:48,692 INFO L93 Difference]: Finished difference Result 842 states and 1218 transitions. [2020-07-21 13:45:48,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:45:48,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-07-21 13:45:48,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:45:48,702 INFO L225 Difference]: With dead ends: 842 [2020-07-21 13:45:48,703 INFO L226 Difference]: Without dead ends: 570 [2020-07-21 13:45:48,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:45:48,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-07-21 13:45:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-07-21 13:45:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-07-21 13:45:48,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 784 transitions. [2020-07-21 13:45:48,749 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 784 transitions. Word has length 120 [2020-07-21 13:45:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:45:48,749 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 784 transitions. [2020-07-21 13:45:48,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:45:48,750 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 784 transitions. [2020-07-21 13:45:48,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-07-21 13:45:48,754 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:45:48,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:45:48,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:48,971 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:45:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:45:48,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1922557334, now seen corresponding path program 1 times [2020-07-21 13:45:48,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:45:48,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853166151] [2020-07-21 13:45:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:49,117 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:45:49,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:45:49,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:45:49,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:45:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:45:49,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:45:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:45:49,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853166151] [2020-07-21 13:45:49,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:45:49,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 13:45:49,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943534201] [2020-07-21 13:45:49,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 13:45:49,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:45:49,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 13:45:49,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:45:49,287 INFO L87 Difference]: Start difference. First operand 556 states and 784 transitions. Second operand 8 states. [2020-07-21 13:45:51,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:45:51,501 INFO L93 Difference]: Finished difference Result 2270 states and 3383 transitions. [2020-07-21 13:45:51,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 13:45:51,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-07-21 13:45:51,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:45:51,522 INFO L225 Difference]: With dead ends: 2270 [2020-07-21 13:45:51,522 INFO L226 Difference]: Without dead ends: 1720 [2020-07-21 13:45:51,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 13:45:51,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-07-21 13:45:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1525. [2020-07-21 13:45:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2020-07-21 13:45:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1994 transitions. [2020-07-21 13:45:51,609 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1994 transitions. Word has length 140 [2020-07-21 13:45:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:45:51,610 INFO L479 AbstractCegarLoop]: Abstraction has 1525 states and 1994 transitions. [2020-07-21 13:45:51,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 13:45:51,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1994 transitions. [2020-07-21 13:45:51,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-07-21 13:45:51,617 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:45:51,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:45:51,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:51,832 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:45:51,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:45:51,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1875176562, now seen corresponding path program 1 times [2020-07-21 13:45:51,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:45:51,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950913453] [2020-07-21 13:45:51,834 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:51,949 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:45:51,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:45:51,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:45:51,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:45:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-21 13:45:51,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:45:51,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950913453] [2020-07-21 13:45:52,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:45:52,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:45:52,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195913002] [2020-07-21 13:45:52,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:45:52,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:45:52,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:45:52,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:45:52,002 INFO L87 Difference]: Start difference. First operand 1525 states and 1994 transitions. Second operand 3 states. [2020-07-21 13:45:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:45:52,735 INFO L93 Difference]: Finished difference Result 4269 states and 5707 transitions. [2020-07-21 13:45:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:45:52,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-07-21 13:45:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:45:52,754 INFO L225 Difference]: With dead ends: 4269 [2020-07-21 13:45:52,755 INFO L226 Difference]: Without dead ends: 2754 [2020-07-21 13:45:52,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:45:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2020-07-21 13:45:52,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2214. [2020-07-21 13:45:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2214 states. [2020-07-21 13:45:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 2923 transitions. [2020-07-21 13:45:52,837 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 2923 transitions. Word has length 144 [2020-07-21 13:45:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:45:52,837 INFO L479 AbstractCegarLoop]: Abstraction has 2214 states and 2923 transitions. [2020-07-21 13:45:52,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:45:52,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 2923 transitions. [2020-07-21 13:45:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-21 13:45:52,846 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:45:52,846 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:45:53,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:53,062 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:45:53,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:45:53,063 INFO L82 PathProgramCache]: Analyzing trace with hash 775269600, now seen corresponding path program 1 times [2020-07-21 13:45:53,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:45:53,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179876129] [2020-07-21 13:45:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:53,205 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:45:53,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:45:53,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:45:53,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:45:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-07-21 13:45:53,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:45:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 80 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-21 13:45:53,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179876129] [2020-07-21 13:45:53,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:45:53,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 13:45:53,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464898237] [2020-07-21 13:45:53,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 13:45:53,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:45:53,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 13:45:53,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:45:53,351 INFO L87 Difference]: Start difference. First operand 2214 states and 2923 transitions. Second operand 7 states. [2020-07-21 13:45:55,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:45:55,072 INFO L93 Difference]: Finished difference Result 7054 states and 9980 transitions. [2020-07-21 13:45:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:45:55,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-07-21 13:45:55,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:45:55,109 INFO L225 Difference]: With dead ends: 7054 [2020-07-21 13:45:55,109 INFO L226 Difference]: Without dead ends: 4850 [2020-07-21 13:45:55,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 365 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:45:55,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4850 states. [2020-07-21 13:45:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4850 to 4035. [2020-07-21 13:45:55,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4035 states. [2020-07-21 13:45:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 5276 transitions. [2020-07-21 13:45:55,338 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 5276 transitions. Word has length 185 [2020-07-21 13:45:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:45:55,338 INFO L479 AbstractCegarLoop]: Abstraction has 4035 states and 5276 transitions. [2020-07-21 13:45:55,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 13:45:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 5276 transitions. [2020-07-21 13:45:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-21 13:45:55,357 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:45:55,357 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:45:55,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:55,571 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:45:55,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:45:55,571 INFO L82 PathProgramCache]: Analyzing trace with hash -447113640, now seen corresponding path program 1 times [2020-07-21 13:45:55,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:45:55,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441445650] [2020-07-21 13:45:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:55,723 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:45:55,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:45:55,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:45:55,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:45:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-21 13:45:55,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:45:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-07-21 13:45:55,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441445650] [2020-07-21 13:45:55,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:45:55,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 13:45:55,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297396562] [2020-07-21 13:45:55,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:45:55,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:45:55,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:45:55,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:45:55,878 INFO L87 Difference]: Start difference. First operand 4035 states and 5276 transitions. Second operand 6 states. [2020-07-21 13:45:56,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:45:56,731 INFO L93 Difference]: Finished difference Result 7141 states and 9435 transitions. [2020-07-21 13:45:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:45:56,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2020-07-21 13:45:56,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:45:56,756 INFO L225 Difference]: With dead ends: 7141 [2020-07-21 13:45:56,757 INFO L226 Difference]: Without dead ends: 4351 [2020-07-21 13:45:56,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 374 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:45:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2020-07-21 13:45:56,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3783. [2020-07-21 13:45:56,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3783 states. [2020-07-21 13:45:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 4853 transitions. [2020-07-21 13:45:56,903 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 4853 transitions. Word has length 189 [2020-07-21 13:45:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:45:56,903 INFO L479 AbstractCegarLoop]: Abstraction has 3783 states and 4853 transitions. [2020-07-21 13:45:56,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:45:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 4853 transitions. [2020-07-21 13:45:56,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-07-21 13:45:56,916 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:45:56,916 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:45:57,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:57,130 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:45:57,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:45:57,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1043857589, now seen corresponding path program 1 times [2020-07-21 13:45:57,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:45:57,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115523456] [2020-07-21 13:45:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:57,264 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:45:57,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:45:57,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:45:57,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:45:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-21 13:45:57,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:45:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-21 13:45:57,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115523456] [2020-07-21 13:45:57,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:45:57,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 13:45:57,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506685562] [2020-07-21 13:45:57,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:45:57,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:45:57,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:45:57,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:45:57,410 INFO L87 Difference]: Start difference. First operand 3783 states and 4853 transitions. Second operand 6 states. [2020-07-21 13:45:58,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:45:58,641 INFO L93 Difference]: Finished difference Result 11118 states and 15496 transitions. [2020-07-21 13:45:58,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:45:58,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2020-07-21 13:45:58,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:45:58,685 INFO L225 Difference]: With dead ends: 11118 [2020-07-21 13:45:58,685 INFO L226 Difference]: Without dead ends: 7345 [2020-07-21 13:45:58,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 390 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:45:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2020-07-21 13:45:58,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 6946. [2020-07-21 13:45:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6946 states. [2020-07-21 13:45:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 8873 transitions. [2020-07-21 13:45:58,947 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 8873 transitions. Word has length 197 [2020-07-21 13:45:58,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:45:58,948 INFO L479 AbstractCegarLoop]: Abstraction has 6946 states and 8873 transitions. [2020-07-21 13:45:58,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:45:58,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 8873 transitions. [2020-07-21 13:45:58,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-21 13:45:58,973 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:45:58,974 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:45:59,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:59,187 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:45:59,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:45:59,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1960011780, now seen corresponding path program 1 times [2020-07-21 13:45:59,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:45:59,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999959840] [2020-07-21 13:45:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:45:59,342 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:45:59,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:45:59,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:45:59,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:45:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-07-21 13:45:59,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:45:59,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999959840] [2020-07-21 13:45:59,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:45:59,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:45:59,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522327111] [2020-07-21 13:45:59,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:45:59,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:45:59,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:45:59,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:45:59,480 INFO L87 Difference]: Start difference. First operand 6946 states and 8873 transitions. Second operand 3 states. [2020-07-21 13:46:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:46:00,036 INFO L93 Difference]: Finished difference Result 11982 states and 15303 transitions. [2020-07-21 13:46:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:46:00,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2020-07-21 13:46:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:46:00,038 INFO L225 Difference]: With dead ends: 11982 [2020-07-21 13:46:00,041 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:46:00,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:46:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:46:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:46:00,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:46:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:46:00,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 199 [2020-07-21 13:46:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:46:00,064 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:46:00,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:46:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:46:00,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:46:00,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:46:00,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:46:01,125 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 124 [2020-07-21 13:46:01,565 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 124 [2020-07-21 13:46:02,524 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 63 [2020-07-21 13:46:03,132 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 31 [2020-07-21 13:46:03,792 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 31 [2020-07-21 13:46:03,796 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:46:03,797 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (<= ~a20~0 |old(~a20~0)|) (<= |old(~a16~0)| ~a16~0)) [2020-07-21 13:46:03,797 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:46:03,797 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 13:46:03,797 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 13:46:03,798 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,798 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,798 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,798 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,798 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,799 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,799 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 13:46:03,799 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 13:46:03,799 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 13:46:03,799 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 13:46:03,800 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 13:46:03,800 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 13:46:03,800 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 13:46:03,800 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 13:46:03,800 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 13:46:03,800 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 13:46:03,800 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,800 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,801 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,801 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,801 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,801 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,801 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 13:46:03,801 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 13:46:03,801 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 13:46:03,801 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 13:46:03,801 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 13:46:03,802 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 13:46:03,802 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 13:46:03,802 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 13:46:03,802 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 13:46:03,802 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 13:46:03,802 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 13:46:03,802 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 488) no Hoare annotation was computed. [2020-07-21 13:46:03,802 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 13:46:03,802 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 13:46:03,802 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 13:46:03,803 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 13:46:03,803 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,803 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,803 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,803 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,803 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,803 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 13:46:03,803 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 13:46:03,803 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 13:46:03,803 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 13:46:03,803 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 13:46:03,804 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 13:46:03,804 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 13:46:03,804 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 13:46:03,804 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 13:46:03,804 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,804 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,804 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,804 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,804 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,804 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 13:46:03,805 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 13:46:03,805 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 13:46:03,805 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 13:46:03,805 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 13:46:03,805 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 13:46:03,805 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 13:46:03,805 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 13:46:03,805 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 13:46:03,806 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 13:46:03,806 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 13:46:03,806 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 13:46:03,806 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 13:46:03,806 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,806 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,806 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,806 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,806 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,807 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 13:46:03,807 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 13:46:03,807 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 13:46:03,807 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 13:46:03,807 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 13:46:03,807 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 13:46:03,807 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 13:46:03,807 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 13:46:03,807 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 13:46:03,808 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,808 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,808 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,808 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,808 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,808 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,808 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 13:46:03,808 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,809 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 13:46:03,809 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 13:46:03,809 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 13:46:03,809 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 13:46:03,809 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 13:46:03,809 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 13:46:03,809 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 13:46:03,809 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 13:46:03,809 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 13:46:03,810 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 13:46:03,810 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 13:46:03,810 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 13:46:03,810 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 13:46:03,810 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,810 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,810 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,810 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,810 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,810 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 13:46:03,811 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 13:46:03,811 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 13:46:03,811 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 13:46:03,811 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 13:46:03,811 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 13:46:03,811 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 13:46:03,811 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 13:46:03,811 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,811 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,811 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,811 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,812 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,812 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 13:46:03,812 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 13:46:03,812 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 13:46:03,812 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 13:46:03,812 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 13:46:03,812 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 13:46:03,812 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 13:46:03,813 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 13:46:03,813 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 13:46:03,813 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 13:46:03,813 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse0 (not (<= 15 |old(~a8~0)|))) (.cse3 (<= ~a17~0 0)) (.cse4 (not (<= |old(~a17~0)| 0))) (.cse5 (<= ~a8~0 |old(~a8~0)|)) (.cse6 (<= ~a16~0 |old(~a16~0)|)) (.cse7 (<= ~a20~0 |old(~a20~0)|)) (.cse8 (<= |old(~a16~0)| ~a16~0)) (.cse2 (<= ~a7~0 0)) (.cse9 (not (<= |old(~a16~0)| 5))) (.cse1 (not (<= |old(~a7~0)| 0))) (.cse10 (not (<= |old(~a8~0)| 13)))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse3 .cse4) (or .cse0 (and .cse5 .cse6 .cse7 .cse8 (<= 15 ~a8~0))) (or .cse9 .cse10 (and .cse5 .cse7 (<= ~a16~0 5) (<= 5 ~a16~0)) (not (<= 5 |old(~a16~0)|))) (or (and .cse7 (or (and .cse5 .cse6 (<= ~a8~0 13) .cse8 (<= ~a16~0 4)) (and .cse5 .cse6 .cse8 .cse3))) (and (or .cse9 .cse4) (or .cse10 (not (<= |old(~a16~0)| 4))) (or .cse10 .cse4))) (or (and .cse5 .cse6 .cse7 .cse8 .cse2) (and (or .cse1 .cse9) (or .cse1 .cse10))))) [2020-07-21 13:46:03,813 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 13:46:03,813 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,813 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,814 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,814 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,814 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 13:46:03,814 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,814 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,814 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 13:46:03,814 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 13:46:03,814 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 13:46:03,814 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 13:46:03,815 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 13:46:03,815 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 13:46:03,815 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 13:46:03,815 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 13:46:03,815 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 13:46:03,815 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 13:46:03,815 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 13:46:03,815 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 13:46:03,816 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,816 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,816 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,816 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,816 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,816 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 13:46:03,816 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,816 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 13:46:03,816 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 13:46:03,817 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 13:46:03,817 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 13:46:03,817 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 13:46:03,817 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 13:46:03,817 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 13:46:03,817 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 13:46:03,817 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 13:46:03,817 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 13:46:03,817 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 13:46:03,818 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 13:46:03,818 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 13:46:03,818 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 13:46:03,818 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,818 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,818 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,818 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,818 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,818 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:46:03,819 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 13:46:03,819 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 13:46:03,819 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 13:46:03,819 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 13:46:03,819 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 13:46:03,819 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 13:46:03,819 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 13:46:03,819 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 13:46:03,819 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 13:46:03,819 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 13:46:03,820 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:46:03,820 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0)) [2020-07-21 13:46:03,820 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:46:03,820 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:46:03,820 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (and (<= ~a8~0 |old(~a8~0)|) (<= ~a20~0 |old(~a20~0)|) (<= ~a7~0 0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0)) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (<= 5 |old(~a16~0)|))) [2020-07-21 13:46:03,820 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 13:46:03,820 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 0)) (.cse1 (<= ~a16~0 5)) (.cse2 (<= ~a8~0 13)) (.cse3 (<= ~a7~0 0))) (or (and .cse0 .cse1) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (<= 15 ~a8~0) (and .cse2 .cse0) (and .cse3 .cse1) (not (<= |old(~a16~0)| 5)) (and .cse2 .cse1) (not (<= 5 |old(~a16~0)|)) (and .cse2 .cse3))) [2020-07-21 13:46:03,821 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 13:46:03,821 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 13:46:03,821 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 0)) (.cse1 (<= ~a16~0 5)) (.cse2 (<= ~a8~0 13)) (.cse3 (<= ~a7~0 0))) (or (and .cse0 .cse1) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (<= 15 ~a8~0) (and .cse2 .cse0) (and .cse3 .cse1) (not (<= |old(~a16~0)| 5)) (and .cse2 .cse1) (not (<= 5 |old(~a16~0)|)) (and .cse2 .cse3))) [2020-07-21 13:46:03,821 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 13:46:03,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:46:03 BoogieIcfgContainer [2020-07-21 13:46:03,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:46:03,842 INFO L168 Benchmark]: Toolchain (without parser) took 20218.30 ms. Allocated memory was 139.5 MB in the beginning and 576.7 MB in the end (delta: 437.3 MB). Free memory was 99.9 MB in the beginning and 442.6 MB in the end (delta: -342.7 MB). Peak memory consumption was 415.0 MB. Max. memory is 7.1 GB. [2020-07-21 13:46:03,842 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 13:46:03,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.45 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 99.5 MB in the beginning and 171.8 MB in the end (delta: -72.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2020-07-21 13:46:03,844 INFO L168 Benchmark]: Boogie Preprocessor took 124.93 ms. Allocated memory is still 205.5 MB. Free memory was 171.8 MB in the beginning and 166.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-07-21 13:46:03,845 INFO L168 Benchmark]: RCFGBuilder took 1302.15 ms. Allocated memory was 205.5 MB in the beginning and 237.5 MB in the end (delta: 32.0 MB). Free memory was 166.1 MB in the beginning and 181.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-07-21 13:46:03,846 INFO L168 Benchmark]: TraceAbstraction took 18021.69 ms. Allocated memory was 237.5 MB in the beginning and 576.7 MB in the end (delta: 339.2 MB). Free memory was 180.0 MB in the beginning and 442.6 MB in the end (delta: -262.6 MB). Peak memory consumption was 397.0 MB. Max. memory is 7.1 GB. [2020-07-21 13:46:03,849 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 139.5 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 761.45 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 99.5 MB in the beginning and 171.8 MB in the end (delta: -72.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.93 ms. Allocated memory is still 205.5 MB. Free memory was 171.8 MB in the beginning and 166.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1302.15 ms. Allocated memory was 205.5 MB in the beginning and 237.5 MB in the end (delta: 32.0 MB). Free memory was 166.1 MB in the beginning and 181.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18021.69 ms. Allocated memory was 237.5 MB in the beginning and 576.7 MB in the end (delta: 339.2 MB). Free memory was 180.0 MB in the beginning and 442.6 MB in the end (delta: -262.6 MB). Peak memory consumption was 397.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 488]: 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) || !(15 <= \old(a8))) || !(\old(a7) <= 0)) || 15 <= a8) || (a8 <= 13 && a17 <= 0)) || (a7 <= 0 && a16 <= 5)) || !(\old(a16) <= 5)) || (a8 <= 13 && a16 <= 5)) || !(5 <= \old(a16))) || (a8 <= 13 && a7 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.3s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 454 SDtfs, 2438 SDslu, 331 SDs, 0 SdLazy, 6851 SolverSat, 934 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2014 GetRequests, 1969 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6946occurred 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: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 2531 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 174 PreInvPairs, 276 NumberOfFragments, 344 HoareAnnotationTreeSize, 174 FomulaSimplifications, 44399 FormulaSimplificationTreeSizeReduction, 1.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 13149 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1284 NumberOfCodeBlocks, 1284 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1983 ConstructedInterpolants, 0 QuantifiedInterpolants, 584153 SizeOfPredicates, 10 NumberOfNonLiveVariables, 3793 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 1116/1178 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...