/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 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:09:09,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:09:09,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:09:09,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:09:09,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:09:09,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:09:09,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:09:09,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:09:09,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:09:09,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:09:09,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:09:09,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:09:09,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:09:09,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:09:09,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:09:09,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:09:09,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:09:09,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:09:09,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:09:09,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:09:09,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:09:09,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:09:09,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:09:09,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:09:09,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 14:09:09,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 14:09:09,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 14:09:09,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 14:09:09,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 14:09:09,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 14:09:09,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 14:09:09,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 14:09:09,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 14:09:09,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 14:09:09,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 14:09:09,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 14:09:09,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 14:09:09,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 14:09:09,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:09:09,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:09:09,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:09:09,190 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 14:09:09,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:09:09,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:09:09,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:09:09,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:09:09,213 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:09:09,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:09:09,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:09:09,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:09:09,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:09:09,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:09:09,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:09:09,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:09:09,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:09:09,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:09:09,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:09:09,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:09:09,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:09:09,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:09:09,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:09:09,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:09:09,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:09:09,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:09:09,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:09:09,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:09:09,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:09:09,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:09:09,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:09,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:09:09,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:09:09,220 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 -> 4 [2020-07-20 14:09:09,536 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:09:09,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:09:09,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:09:09,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:09:09,567 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:09:09,568 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-07-20 14:09:09,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4998917d3/bef94cd9ae54400491bd5515148e7c4b/FLAGc549c7d6a [2020-07-20 14:09:10,226 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:09:10,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-07-20 14:09:10,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4998917d3/bef94cd9ae54400491bd5515148e7c4b/FLAGc549c7d6a [2020-07-20 14:09:10,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4998917d3/bef94cd9ae54400491bd5515148e7c4b [2020-07-20 14:09:10,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:09:10,514 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:09:10,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:09:10,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:09:10,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:09:10,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:09:10" (1/1) ... [2020-07-20 14:09:10,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487a7de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:10, skipping insertion in model container [2020-07-20 14:09:10,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:09:10" (1/1) ... [2020-07-20 14:09:10,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:09:10,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:09:11,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:09:11,087 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:09:11,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:09:11,312 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:09:11,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:11 WrapperNode [2020-07-20 14:09:11,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:09:11,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:09:11,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:09:11,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:09:11,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:11" (1/1) ... [2020-07-20 14:09:11,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:11" (1/1) ... [2020-07-20 14:09:11,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:11" (1/1) ... [2020-07-20 14:09:11,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:11" (1/1) ... [2020-07-20 14:09:11,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:11" (1/1) ... [2020-07-20 14:09:11,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:11" (1/1) ... [2020-07-20 14:09:11,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:11" (1/1) ... [2020-07-20 14:09:11,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:09:11,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:09:11,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:09:11,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:09:11,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:09:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:09:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:09:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 14:09:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:09:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 14:09:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:09:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:09:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 14:09:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:09:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:09:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:09:12,840 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:09:12,841 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:09:12,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:09:12 BoogieIcfgContainer [2020-07-20 14:09:12,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:09:12,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:09:12,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:09:12,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:09:12,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:09:10" (1/3) ... [2020-07-20 14:09:12,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63331a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:09:12, skipping insertion in model container [2020-07-20 14:09:12,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:11" (2/3) ... [2020-07-20 14:09:12,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63331a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:09:12, skipping insertion in model container [2020-07-20 14:09:12,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:09:12" (3/3) ... [2020-07-20 14:09:12,857 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2020-07-20 14:09:12,869 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:09:12,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:09:12,895 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:09:12,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:09:12,924 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:09:12,924 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:09:12,924 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:09:12,924 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:09:12,925 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:09:12,925 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:09:12,925 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:09:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 14:09:12,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 14:09:12,957 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:12,959 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] [2020-07-20 14:09:12,959 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:12,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:12,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1025349313, now seen corresponding path program 1 times [2020-07-20 14:09:12,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:12,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661986346] [2020-07-20 14:09:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:13,087 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:13,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:13,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:13,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:13,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:13,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661986346] [2020-07-20 14:09:13,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:13,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:13,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360511314] [2020-07-20 14:09:13,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:13,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:13,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:13,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:13,186 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 14:09:14,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:14,363 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-20 14:09:14,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:14,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-20 14:09:14,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:14,381 INFO L225 Difference]: With dead ends: 586 [2020-07-20 14:09:14,382 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 14:09:14,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:14,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 14:09:14,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 14:09:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 14:09:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-20 14:09:14,462 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 36 [2020-07-20 14:09:14,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:14,462 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-20 14:09:14,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:14,463 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-20 14:09:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-20 14:09:14,468 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:14,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:14,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:14,681 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:14,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1168948250, now seen corresponding path program 1 times [2020-07-20 14:09:14,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:14,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322811849] [2020-07-20 14:09:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:14,786 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:14,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:14,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:14,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:14,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:14,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322811849] [2020-07-20 14:09:14,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:14,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:09:14,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156851609] [2020-07-20 14:09:14,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:09:14,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:14,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:09:14,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:09:14,846 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-20 14:09:15,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:15,874 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-20 14:09:15,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:09:15,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-07-20 14:09:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:15,889 INFO L225 Difference]: With dead ends: 890 [2020-07-20 14:09:15,889 INFO L226 Difference]: Without dead ends: 602 [2020-07-20 14:09:15,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:09:15,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-20 14:09:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-20 14:09:15,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-20 14:09:15,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-07-20 14:09:15,943 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 110 [2020-07-20 14:09:15,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:15,944 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-07-20 14:09:15,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:09:15,944 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-07-20 14:09:15,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-07-20 14:09:15,947 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:15,947 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:16,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:16,161 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1710537437, now seen corresponding path program 1 times [2020-07-20 14:09:16,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:16,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729929190] [2020-07-20 14:09:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:16,244 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:16,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:16,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:16,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:16,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:16,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729929190] [2020-07-20 14:09:16,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:16,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:16,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678748602] [2020-07-20 14:09:16,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:16,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:16,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:16,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:16,309 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 3 states. [2020-07-20 14:09:17,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:17,019 INFO L93 Difference]: Finished difference Result 1462 states and 1992 transitions. [2020-07-20 14:09:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:17,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2020-07-20 14:09:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:17,029 INFO L225 Difference]: With dead ends: 1462 [2020-07-20 14:09:17,029 INFO L226 Difference]: Without dead ends: 878 [2020-07-20 14:09:17,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-07-20 14:09:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-07-20 14:09:17,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-07-20 14:09:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1157 transitions. [2020-07-20 14:09:17,076 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1157 transitions. Word has length 115 [2020-07-20 14:09:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:17,077 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1157 transitions. [2020-07-20 14:09:17,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1157 transitions. [2020-07-20 14:09:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-20 14:09:17,081 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:17,081 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:17,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:17,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1140420541, now seen corresponding path program 1 times [2020-07-20 14:09:17,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:17,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610354947] [2020-07-20 14:09:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:17,404 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:17,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:17,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:17,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:17,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:17,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610354947] [2020-07-20 14:09:17,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:17,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:09:17,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418674850] [2020-07-20 14:09:17,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:09:17,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:17,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:09:17,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:09:17,477 INFO L87 Difference]: Start difference. First operand 878 states and 1157 transitions. Second operand 5 states. [2020-07-20 14:09:18,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:18,504 INFO L93 Difference]: Finished difference Result 2370 states and 3201 transitions. [2020-07-20 14:09:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:09:18,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-07-20 14:09:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:18,518 INFO L225 Difference]: With dead ends: 2370 [2020-07-20 14:09:18,519 INFO L226 Difference]: Without dead ends: 1498 [2020-07-20 14:09:18,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:09:18,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-07-20 14:09:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1470. [2020-07-20 14:09:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-07-20 14:09:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1802 transitions. [2020-07-20 14:09:18,608 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1802 transitions. Word has length 131 [2020-07-20 14:09:18,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:18,609 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1802 transitions. [2020-07-20 14:09:18,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:09:18,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1802 transitions. [2020-07-20 14:09:18,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-20 14:09:18,624 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:18,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:18,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:18,838 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:18,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:18,838 INFO L82 PathProgramCache]: Analyzing trace with hash 686602382, now seen corresponding path program 1 times [2020-07-20 14:09:18,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:18,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246069575] [2020-07-20 14:09:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:18,968 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:18,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:18,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:18,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:19,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:19,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246069575] [2020-07-20 14:09:19,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:19,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:19,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476450500] [2020-07-20 14:09:19,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:19,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:19,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:19,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:19,003 INFO L87 Difference]: Start difference. First operand 1470 states and 1802 transitions. Second operand 3 states. [2020-07-20 14:09:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:19,691 INFO L93 Difference]: Finished difference Result 2197 states and 2747 transitions. [2020-07-20 14:09:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:19,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-07-20 14:09:19,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:19,712 INFO L225 Difference]: With dead ends: 2197 [2020-07-20 14:09:19,712 INFO L226 Difference]: Without dead ends: 2195 [2020-07-20 14:09:19,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2020-07-20 14:09:19,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 1909. [2020-07-20 14:09:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1909 states. [2020-07-20 14:09:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2415 transitions. [2020-07-20 14:09:19,793 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2415 transitions. Word has length 132 [2020-07-20 14:09:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:19,794 INFO L479 AbstractCegarLoop]: Abstraction has 1909 states and 2415 transitions. [2020-07-20 14:09:19,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2415 transitions. [2020-07-20 14:09:19,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-20 14:09:19,805 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:19,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 14:09:20,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:20,011 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:20,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:20,012 INFO L82 PathProgramCache]: Analyzing trace with hash 765262029, now seen corresponding path program 1 times [2020-07-20 14:09:20,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:20,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999272678] [2020-07-20 14:09:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:20,120 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:20,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:20,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:20,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:20,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:09:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:20,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999272678] [2020-07-20 14:09:20,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:09:20,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 14:09:20,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323260330] [2020-07-20 14:09:20,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:09:20,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:20,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:09:20,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:09:20,382 INFO L87 Difference]: Start difference. First operand 1909 states and 2415 transitions. Second operand 6 states. [2020-07-20 14:09:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:21,356 INFO L93 Difference]: Finished difference Result 4414 states and 5721 transitions. [2020-07-20 14:09:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:09:21,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2020-07-20 14:09:21,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:21,371 INFO L225 Difference]: With dead ends: 4414 [2020-07-20 14:09:21,371 INFO L226 Difference]: Without dead ends: 2511 [2020-07-20 14:09:21,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 402 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:09:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2020-07-20 14:09:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2358. [2020-07-20 14:09:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2358 states. [2020-07-20 14:09:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2988 transitions. [2020-07-20 14:09:21,483 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2988 transitions. Word has length 204 [2020-07-20 14:09:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:21,484 INFO L479 AbstractCegarLoop]: Abstraction has 2358 states and 2988 transitions. [2020-07-20 14:09:21,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:09:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2988 transitions. [2020-07-20 14:09:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-07-20 14:09:21,489 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:21,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:21,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:21,704 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:21,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:21,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1567937143, now seen corresponding path program 1 times [2020-07-20 14:09:21,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:21,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967038871] [2020-07-20 14:09:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:21,820 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:21,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:21,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:21,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-07-20 14:09:21,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:21,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967038871] [2020-07-20 14:09:21,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:21,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:21,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120421778] [2020-07-20 14:09:21,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:21,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:21,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:21,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:21,878 INFO L87 Difference]: Start difference. First operand 2358 states and 2988 transitions. Second operand 3 states. [2020-07-20 14:09:22,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:22,582 INFO L93 Difference]: Finished difference Result 5723 states and 7412 transitions. [2020-07-20 14:09:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:22,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-07-20 14:09:22,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:22,601 INFO L225 Difference]: With dead ends: 5723 [2020-07-20 14:09:22,601 INFO L226 Difference]: Without dead ends: 3371 [2020-07-20 14:09:22,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2020-07-20 14:09:22,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3085. [2020-07-20 14:09:22,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3085 states. [2020-07-20 14:09:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 3850 transitions. [2020-07-20 14:09:22,762 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 3850 transitions. Word has length 222 [2020-07-20 14:09:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:22,763 INFO L479 AbstractCegarLoop]: Abstraction has 3085 states and 3850 transitions. [2020-07-20 14:09:22,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 3850 transitions. [2020-07-20 14:09:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-07-20 14:09:22,769 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:22,769 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 14:09:22,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:22,984 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:22,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:22,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1850787275, now seen corresponding path program 1 times [2020-07-20 14:09:22,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:22,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625169225] [2020-07-20 14:09:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:23,138 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:23,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:23,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:23,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 14:09:23,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:23,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625169225] [2020-07-20 14:09:23,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:23,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:23,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942783439] [2020-07-20 14:09:23,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:23,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:23,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:23,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:23,200 INFO L87 Difference]: Start difference. First operand 3085 states and 3850 transitions. Second operand 3 states. [2020-07-20 14:09:23,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:23,959 INFO L93 Difference]: Finished difference Result 6742 states and 8572 transitions. [2020-07-20 14:09:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:23,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-07-20 14:09:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:23,980 INFO L225 Difference]: With dead ends: 6742 [2020-07-20 14:09:23,981 INFO L226 Difference]: Without dead ends: 3663 [2020-07-20 14:09:23,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:23,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2020-07-20 14:09:24,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3516. [2020-07-20 14:09:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3516 states. [2020-07-20 14:09:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 4456 transitions. [2020-07-20 14:09:24,126 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 4456 transitions. Word has length 232 [2020-07-20 14:09:24,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:24,126 INFO L479 AbstractCegarLoop]: Abstraction has 3516 states and 4456 transitions. [2020-07-20 14:09:24,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 4456 transitions. [2020-07-20 14:09:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-07-20 14:09:24,135 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:24,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:24,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:24,340 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:24,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:24,340 INFO L82 PathProgramCache]: Analyzing trace with hash 633023203, now seen corresponding path program 1 times [2020-07-20 14:09:24,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:24,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147640262] [2020-07-20 14:09:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:24,478 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:24,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:24,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:24,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:24,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:09:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:24,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147640262] [2020-07-20 14:09:24,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:09:24,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 14:09:24,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128840682] [2020-07-20 14:09:24,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:09:24,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:24,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:09:24,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:09:24,706 INFO L87 Difference]: Start difference. First operand 3516 states and 4456 transitions. Second operand 6 states. [2020-07-20 14:09:25,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:25,865 INFO L93 Difference]: Finished difference Result 8103 states and 10496 transitions. [2020-07-20 14:09:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:09:25,866 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 256 [2020-07-20 14:09:25,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:25,882 INFO L225 Difference]: With dead ends: 8103 [2020-07-20 14:09:25,883 INFO L226 Difference]: Without dead ends: 2992 [2020-07-20 14:09:25,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 508 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:09:25,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2020-07-20 14:09:25,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2652. [2020-07-20 14:09:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2652 states. [2020-07-20 14:09:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3213 transitions. [2020-07-20 14:09:25,985 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3213 transitions. Word has length 256 [2020-07-20 14:09:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:25,986 INFO L479 AbstractCegarLoop]: Abstraction has 2652 states and 3213 transitions. [2020-07-20 14:09:25,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:09:25,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3213 transitions. [2020-07-20 14:09:25,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-07-20 14:09:25,995 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:25,995 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:26,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:26,211 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:26,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:26,212 INFO L82 PathProgramCache]: Analyzing trace with hash 611370194, now seen corresponding path program 1 times [2020-07-20 14:09:26,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:26,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276891656] [2020-07-20 14:09:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:26,366 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:26,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:26,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:26,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:26,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:09:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:26,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276891656] [2020-07-20 14:09:26,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:09:26,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 14:09:26,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229676529] [2020-07-20 14:09:26,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 14:09:26,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:26,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 14:09:26,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:09:26,650 INFO L87 Difference]: Start difference. First operand 2652 states and 3213 transitions. Second operand 7 states. [2020-07-20 14:09:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:28,283 INFO L93 Difference]: Finished difference Result 5336 states and 6562 transitions. [2020-07-20 14:09:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 14:09:28,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-07-20 14:09:28,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:28,296 INFO L225 Difference]: With dead ends: 5336 [2020-07-20 14:09:28,297 INFO L226 Difference]: Without dead ends: 2690 [2020-07-20 14:09:28,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 544 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-20 14:09:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2020-07-20 14:09:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2654. [2020-07-20 14:09:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2654 states. [2020-07-20 14:09:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 2996 transitions. [2020-07-20 14:09:28,373 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 2996 transitions. Word has length 273 [2020-07-20 14:09:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:28,374 INFO L479 AbstractCegarLoop]: Abstraction has 2654 states and 2996 transitions. [2020-07-20 14:09:28,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 14:09:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 2996 transitions. [2020-07-20 14:09:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-07-20 14:09:28,384 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:28,384 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:28,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:28,598 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:28,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:28,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1980077803, now seen corresponding path program 1 times [2020-07-20 14:09:28,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:28,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47553752] [2020-07-20 14:09:28,600 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:28,751 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:28,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:28,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:28,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-07-20 14:09:28,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:28,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47553752] [2020-07-20 14:09:28,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:28,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:28,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356405744] [2020-07-20 14:09:28,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:28,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:28,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:28,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:28,854 INFO L87 Difference]: Start difference. First operand 2654 states and 2996 transitions. Second operand 3 states. [2020-07-20 14:09:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:29,206 INFO L93 Difference]: Finished difference Result 2654 states and 2996 transitions. [2020-07-20 14:09:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:29,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 292 [2020-07-20 14:09:29,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:29,208 INFO L225 Difference]: With dead ends: 2654 [2020-07-20 14:09:29,209 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:09:29,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:09:29,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:09:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:09:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:09:29,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 292 [2020-07-20 14:09:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:29,215 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:09:29,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:09:29,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:09:29,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:29,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:09:30,789 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 59 [2020-07-20 14:09:31,058 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 33 [2020-07-20 14:09:31,321 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 33 [2020-07-20 14:09:31,325 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:09:31,326 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|)) [2020-07-20 14:09:31,326 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:09:31,326 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 14:09:31,326 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,326 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,326 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,327 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,327 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,327 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,327 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 14:09:31,327 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 14:09:31,327 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 14:09:31,327 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 14:09:31,328 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 14:09:31,328 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 14:09:31,328 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 14:09:31,328 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 14:09:31,328 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 14:09:31,328 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 14:09:31,328 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 14:09:31,329 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,329 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,329 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,329 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,329 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,329 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 14:09:31,329 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 14:09:31,329 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 14:09:31,329 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 14:09:31,329 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 94) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,330 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,331 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,331 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,331 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,331 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 14:09:31,331 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 14:09:31,331 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 14:09:31,331 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 14:09:31,331 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 14:09:31,331 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 14:09:31,331 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 14:09:31,332 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 14:09:31,332 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 14:09:31,332 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 14:09:31,332 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,332 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,332 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,332 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,332 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,332 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 14:09:31,332 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 14:09:31,333 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 14:09:31,333 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 14:09:31,333 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 14:09:31,333 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 14:09:31,333 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 14:09:31,333 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 14:09:31,333 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 14:09:31,333 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 14:09:31,334 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 14:09:31,334 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 14:09:31,334 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 14:09:31,334 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,334 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,334 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,334 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,334 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,335 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 14:09:31,336 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 14:09:31,337 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 14:09:31,337 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 14:09:31,337 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 14:09:31,337 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 14:09:31,337 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,337 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,337 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,337 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,337 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 14:09:31,338 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,338 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,338 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 14:09:31,338 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 14:09:31,338 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 14:09:31,338 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 14:09:31,338 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 14:09:31,338 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 14:09:31,339 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 14:09:31,339 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 14:09:31,339 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 14:09:31,339 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 14:09:31,339 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 14:09:31,339 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 14:09:31,339 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 14:09:31,339 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,340 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,340 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,340 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,340 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,340 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,340 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 14:09:31,340 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 14:09:31,340 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 14:09:31,340 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 14:09:31,341 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 14:09:31,341 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 14:09:31,341 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 14:09:31,341 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 14:09:31,341 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 14:09:31,341 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 14:09:31,341 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 14:09:31,342 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse7 (<= ~a10~0 |old(~a10~0)|)) (.cse9 (<= ~a19~0 |old(~a19~0)|))) (let ((.cse4 (and .cse7 .cse9)) (.cse1 (<= ~a1~0 23)) (.cse8 (<= |old(~a10~0)| ~a10~0)) (.cse2 (not (<= |old(~a10~0)| 1))) (.cse10 (<= 9 ~a19~0)) (.cse0 (not (<= |old(~a1~0)| 23))) (.cse11 (not (<= 9 |old(~a19~0)|))) (.cse12 (not (<= |old(~a10~0)| 2))) (.cse3 (not (< 218 |old(~a1~0)|))) (.cse5 (not (<= |old(~a19~0)| 9))) (.cse6 (< 218 ~a1~0))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 .cse5) (or .cse3 .cse6 .cse2) (or (not (<= |old(~a10~0)| 3)) (not (<= |old(~a19~0)| 8)) .cse4) (or .cse0 .cse4 .cse5) (or .cse0 .cse1 .cse5) (or (not (<= 8 |old(~a19~0)|)) .cse5 (and .cse7 (<= 8 ~a19~0) .cse8 .cse9)) (or .cse10 .cse3 .cse11 .cse5 .cse12) (or (not (<= 4 |old(~a10~0)|)) .cse10 .cse11 .cse5) (or (and .cse10 .cse7 .cse8 .cse9) .cse11 .cse2) (or .cse10 .cse0 .cse11 .cse5 .cse12) (or .cse3 .cse5 .cse6)))) [2020-07-20 14:09:31,342 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 14:09:31,342 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 14:09:31,342 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 14:09:31,342 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,342 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,342 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,343 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,343 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,343 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,343 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 14:09:31,343 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 14:09:31,343 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 14:09:31,343 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 14:09:31,343 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 14:09:31,343 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 14:09:31,344 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 14:09:31,344 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 14:09:31,344 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 14:09:31,344 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 14:09:31,344 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 14:09:31,344 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 14:09:31,344 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 14:09:31,344 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,345 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,345 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,345 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,345 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,345 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,345 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 14:09:31,345 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 14:09:31,345 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 14:09:31,345 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 14:09:31,346 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 14:09:31,346 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 14:09:31,346 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 14:09:31,346 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 14:09:31,346 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 14:09:31,346 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 14:09:31,346 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 14:09:31,346 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 14:09:31,346 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,347 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,347 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,347 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,347 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,347 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:31,347 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 14:09:31,347 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 14:09:31,347 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 14:09:31,347 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 14:09:31,348 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 14:09:31,348 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 14:09:31,348 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 14:09:31,348 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 14:09:31,348 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 14:09:31,348 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 14:09:31,348 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 14:09:31,348 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 14:09:31,348 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:09:31,349 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 9 ~a19~0) (<= ~a1~0 23)) [2020-07-20 14:09:31,349 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:09:31,349 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:09:31,349 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= ~a1~0 23) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-20 14:09:31,349 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 14:09:31,349 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (and .cse0 (<= ~a1~0 23)) (<= ~a10~0 1) (and .cse0 (<= ~a10~0 3)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (and (<= ~a19~0 8) (< 218 ~a1~0)) (not (<= 9 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and .cse0 (<= 8 ~a19~0)))) [2020-07-20 14:09:31,350 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 14:09:31,350 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 14:09:31,350 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (and .cse0 (<= ~a1~0 23)) (<= ~a10~0 1) (and .cse0 (<= ~a10~0 3)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (and (<= ~a19~0 8) (< 218 ~a1~0)) (not (<= 9 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and .cse0 (<= 8 ~a19~0)))) [2020-07-20 14:09:31,350 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 14:09:31,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:09:31 BoogieIcfgContainer [2020-07-20 14:09:31,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:09:31,372 INFO L168 Benchmark]: Toolchain (without parser) took 20859.03 ms. Allocated memory was 138.4 MB in the beginning and 556.8 MB in the end (delta: 418.4 MB). Free memory was 102.2 MB in the beginning and 327.2 MB in the end (delta: -225.0 MB). Peak memory consumption was 380.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:31,373 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 14:09:31,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 797.64 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 101.7 MB in the beginning and 171.7 MB in the end (delta: -70.0 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:31,374 INFO L168 Benchmark]: Boogie Preprocessor took 103.40 ms. Allocated memory is still 205.0 MB. Free memory was 171.7 MB in the beginning and 166.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:31,375 INFO L168 Benchmark]: RCFGBuilder took 1431.17 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 182.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:31,376 INFO L168 Benchmark]: TraceAbstraction took 18521.21 ms. Allocated memory was 237.5 MB in the beginning and 556.8 MB in the end (delta: 319.3 MB). Free memory was 182.8 MB in the beginning and 327.2 MB in the end (delta: -144.3 MB). Peak memory consumption was 362.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:31,379 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 797.64 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 101.7 MB in the beginning and 171.7 MB in the end (delta: -70.0 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.40 ms. Allocated memory is still 205.0 MB. Free memory was 171.7 MB in the beginning and 166.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1431.17 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 182.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18521.21 ms. Allocated memory was 237.5 MB in the beginning and 556.8 MB in the end (delta: 319.3 MB). Free memory was 182.8 MB in the beginning and 327.2 MB in the end (delta: -144.3 MB). Peak memory consumption was 362.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 94]: 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: 582]: Loop Invariant Derived loop invariant: ((((((((a19 <= 9 && a1 <= 23) || a10 <= 1) || (a19 <= 9 && a10 <= 3)) || !(\old(a1) <= 23)) || !(\old(a10) <= 0)) || (a19 <= 8 && 218 < a1)) || !(9 <= \old(a19))) || !(\old(a19) <= 9)) || (a19 <= 9 && 8 <= a19) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.5s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 515 SDtfs, 2401 SDslu, 237 SDs, 0 SdLazy, 6191 SolverSat, 1163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2751 GetRequests, 2703 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3516occurred in iteration=8, 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, 11 MinimizatonAttempts, 1288 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 140 PreInvPairs, 198 NumberOfFragments, 350 HoareAnnotationTreeSize, 140 FomulaSimplifications, 7830 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3033 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 2003 NumberOfCodeBlocks, 2003 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 2722 ConstructedInterpolants, 0 QuantifiedInterpolants, 1457218 SizeOfPredicates, 15 NumberOfNonLiveVariables, 3699 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 1398/1410 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...