/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:34:35,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:34:35,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:34:35,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:34:35,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:34:35,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:34:35,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:34:35,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:34:35,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:34:35,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:34:35,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:34:35,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:34:35,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:34:35,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:34:35,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:34:35,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:34:35,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:34:35,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:34:35,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:34:35,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:34:35,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:34:35,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:34:35,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:34:35,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:34:35,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:34:35,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:34:35,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:34:35,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:34:35,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:34:35,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:34:35,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:34:35,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:34:35,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:34:35,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:34:35,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:34:35,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:34:35,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:34:35,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:34:35,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:34:35,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:34:35,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:34:35,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:34:35,731 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:34:35,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:34:35,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:34:35,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:34:35,734 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:34:35,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:34:35,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:34:35,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:34:35,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:34:35,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:34:35,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:34:35,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:34:35,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:34:35,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:34:35,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:34:35,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:34:35,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:34:35,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:34:35,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:34:35,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:34:35,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:34:35,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:34:35,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:34:35,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:34:35,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:34:35,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:34:35,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:34:35,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:34:35,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:34:35,742 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:34:36,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:34:36,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:34:36,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:34:36,241 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:34:36,242 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:34:36,244 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-21 12:34:36,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec8b2490a/d92f9bc9e0194eab90c3533d1e9b5bc7/FLAGefb54a065 [2020-09-21 12:34:36,904 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:34:36,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-21 12:34:36,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec8b2490a/d92f9bc9e0194eab90c3533d1e9b5bc7/FLAGefb54a065 [2020-09-21 12:34:37,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec8b2490a/d92f9bc9e0194eab90c3533d1e9b5bc7 [2020-09-21 12:34:37,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:34:37,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:34:37,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:34:37,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:34:37,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:34:37,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:34:37" (1/1) ... [2020-09-21 12:34:37,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122c307d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:37, skipping insertion in model container [2020-09-21 12:34:37,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:34:37" (1/1) ... [2020-09-21 12:34:37,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:34:37,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:34:37,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:34:37,583 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:34:37,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:34:37,630 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:34:37,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:37 WrapperNode [2020-09-21 12:34:37,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:34:37,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:34:37,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:34:37,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:34:37,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:37" (1/1) ... [2020-09-21 12:34:37,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:37" (1/1) ... [2020-09-21 12:34:37,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:37" (1/1) ... [2020-09-21 12:34:37,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:37" (1/1) ... [2020-09-21 12:34:37,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:37" (1/1) ... [2020-09-21 12:34:37,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:37" (1/1) ... [2020-09-21 12:34:37,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:37" (1/1) ... [2020-09-21 12:34:37,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:34:37,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:34:37,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:34:37,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:34:37,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-21 12:34:37,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:34:37,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:34:37,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:34:37,860 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-21 12:34:37,860 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-21 12:34:37,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:34:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:34:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:34:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:34:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-21 12:34:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:34:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-21 12:34:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:34:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:34:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:34:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:34:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:34:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:34:38,262 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:34:38,263 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-21 12:34:38,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:34:38 BoogieIcfgContainer [2020-09-21 12:34:38,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:34:38,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:34:38,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:34:38,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:34:38,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:34:37" (1/3) ... [2020-09-21 12:34:38,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3d89de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:34:38, skipping insertion in model container [2020-09-21 12:34:38,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:37" (2/3) ... [2020-09-21 12:34:38,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3d89de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:34:38, skipping insertion in model container [2020-09-21 12:34:38,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:34:38" (3/3) ... [2020-09-21 12:34:38,279 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-21 12:34:38,291 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:34:38,302 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:34:38,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:34:38,369 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:34:38,369 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:34:38,369 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:34:38,370 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:34:38,370 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:34:38,370 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:34:38,370 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:34:38,370 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:34:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-09-21 12:34:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 12:34:38,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:38,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:34:38,402 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:38,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:38,409 INFO L82 PathProgramCache]: Analyzing trace with hash 528217166, now seen corresponding path program 1 times [2020-09-21 12:34:38,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:38,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986558852] [2020-09-21 12:34:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:38,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:38,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:38,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 12:34:38,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:34:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-21 12:34:38,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:34:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:34:38,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:34:38,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:34:38,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:38,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:38,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:38,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:38,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:34:38,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:38,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:34:39,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986558852] [2020-09-21 12:34:39,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:34:39,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:34:39,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583953376] [2020-09-21 12:34:39,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:34:39,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:39,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:34:39,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:34:39,045 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-09-21 12:34:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:39,400 INFO L93 Difference]: Finished difference Result 150 states and 228 transitions. [2020-09-21 12:34:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:34:39,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-21 12:34:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:39,417 INFO L225 Difference]: With dead ends: 150 [2020-09-21 12:34:39,417 INFO L226 Difference]: Without dead ends: 89 [2020-09-21 12:34:39,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:34:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-21 12:34:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 57. [2020-09-21 12:34:39,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-21 12:34:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2020-09-21 12:34:39,504 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 14 [2020-09-21 12:34:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:39,504 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2020-09-21 12:34:39,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:34:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2020-09-21 12:34:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 12:34:39,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:39,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:34:39,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:34:39,507 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:39,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:39,508 INFO L82 PathProgramCache]: Analyzing trace with hash 396779504, now seen corresponding path program 1 times [2020-09-21 12:34:39,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:39,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213498929] [2020-09-21 12:34:39,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:39,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:39,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:34:39,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:34:39,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-21 12:34:39,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:34:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:34:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:34:39,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:39,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:39,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:39,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:39,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:39,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:39,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:34:39,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:34:39,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213498929] [2020-09-21 12:34:39,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:34:39,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:34:39,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852947211] [2020-09-21 12:34:39,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:34:39,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:39,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:34:39,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:34:39,941 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand 5 states. [2020-09-21 12:34:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:40,163 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2020-09-21 12:34:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:34:40,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-21 12:34:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:40,166 INFO L225 Difference]: With dead ends: 111 [2020-09-21 12:34:40,166 INFO L226 Difference]: Without dead ends: 62 [2020-09-21 12:34:40,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:34:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-21 12:34:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-09-21 12:34:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-21 12:34:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2020-09-21 12:34:40,180 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 16 [2020-09-21 12:34:40,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:40,181 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2020-09-21 12:34:40,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:34:40,181 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2020-09-21 12:34:40,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-21 12:34:40,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:40,183 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] [2020-09-21 12:34:40,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:34:40,183 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:40,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1038969378, now seen corresponding path program 1 times [2020-09-21 12:34:40,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:40,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358729639] [2020-09-21 12:34:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:40,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:40,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:40,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:40,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:40,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:41,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:34:41,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:34:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-21 12:34:41,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:34:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:34:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:34:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:41,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:41,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:41,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:34:41,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:41,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:34:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:41,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:41,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:34:41,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:41,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:34:41,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:34:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:41,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:41,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:34:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:41,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:41,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:34:41,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:34:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:41,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:34:41,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358729639] [2020-09-21 12:34:41,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:34:41,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:34:41,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979190001] [2020-09-21 12:34:41,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:34:41,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:41,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:34:41,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:34:41,298 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand 5 states. [2020-09-21 12:34:41,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:41,497 INFO L93 Difference]: Finished difference Result 123 states and 152 transitions. [2020-09-21 12:34:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:34:41,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-21 12:34:41,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:41,499 INFO L225 Difference]: With dead ends: 123 [2020-09-21 12:34:41,500 INFO L226 Difference]: Without dead ends: 78 [2020-09-21 12:34:41,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:34:41,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-21 12:34:41,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2020-09-21 12:34:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-21 12:34:41,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2020-09-21 12:34:41,512 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 35 [2020-09-21 12:34:41,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:41,513 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2020-09-21 12:34:41,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:34:41,513 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2020-09-21 12:34:41,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 12:34:41,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:41,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:34:41,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:34:41,515 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:41,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1973807940, now seen corresponding path program 1 times [2020-09-21 12:34:41,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:41,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030179738] [2020-09-21 12:34:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:42,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:34:42,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:34:42,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:34:42,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:34:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:34:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:34:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:42,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:42,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:42,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:42,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:34:42,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:42,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:42,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:42,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:42,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 12:34:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:42,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:34:42,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:34:42,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:34:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:42,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:42,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:34:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:42,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:42,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:42,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:42,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:34:42,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:34:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:42,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:34:42,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030179738] [2020-09-21 12:34:42,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:34:42,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:34:42,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205910125] [2020-09-21 12:34:42,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:34:42,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:42,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:34:42,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:34:42,631 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 6 states. [2020-09-21 12:34:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:42,902 INFO L93 Difference]: Finished difference Result 146 states and 184 transitions. [2020-09-21 12:34:42,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:34:42,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-09-21 12:34:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:42,904 INFO L225 Difference]: With dead ends: 146 [2020-09-21 12:34:42,904 INFO L226 Difference]: Without dead ends: 101 [2020-09-21 12:34:42,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:34:42,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-21 12:34:42,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77. [2020-09-21 12:34:42,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-21 12:34:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2020-09-21 12:34:42,918 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 37 [2020-09-21 12:34:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:42,918 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2020-09-21 12:34:42,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:34:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2020-09-21 12:34:42,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-21 12:34:42,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:42,920 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:34:42,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:34:42,921 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:42,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:42,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1589466138, now seen corresponding path program 2 times [2020-09-21 12:34:42,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:42,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643167140] [2020-09-21 12:34:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:43,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 12:34:43,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:34:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:34:43,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:34:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-21 12:34:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:34:43,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:43,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:43,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:34:43,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:43,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:43,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:34:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:43,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:44,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:34:44,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:34:44,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:34:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:34:44,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 12:34:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:44,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:44,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:44,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:44,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:34:44,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:34:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 12:34:44,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643167140] [2020-09-21 12:34:44,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:34:44,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:34:44,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645453925] [2020-09-21 12:34:44,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:34:44,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:44,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:34:44,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:34:44,037 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand 6 states. [2020-09-21 12:34:44,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:44,195 INFO L93 Difference]: Finished difference Result 133 states and 168 transitions. [2020-09-21 12:34:44,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:34:44,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-09-21 12:34:44,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:44,197 INFO L225 Difference]: With dead ends: 133 [2020-09-21 12:34:44,198 INFO L226 Difference]: Without dead ends: 85 [2020-09-21 12:34:44,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:34:44,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-21 12:34:44,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-09-21 12:34:44,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-21 12:34:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2020-09-21 12:34:44,210 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 39 [2020-09-21 12:34:44,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:44,210 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2020-09-21 12:34:44,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:34:44,211 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2020-09-21 12:34:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-21 12:34:44,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:44,212 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:34:44,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:34:44,213 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:44,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1287911855, now seen corresponding path program 1 times [2020-09-21 12:34:44,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:44,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291510102] [2020-09-21 12:34:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:44,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:45,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:45,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:45,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 12:34:45,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:34:45,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:34:45,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:34:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:34:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:34:45,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:45,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:45,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:45,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:45,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:45,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:34:45,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:45,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:34:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:45,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:45,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:34:45,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:34:45,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:34:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:45,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 12:34:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:45,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:45,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:45,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:34:45,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:34:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:45,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 12:34:45,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291510102] [2020-09-21 12:34:45,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:34:45,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:34:45,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584714392] [2020-09-21 12:34:45,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:34:45,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:45,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:34:45,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:34:45,321 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand 6 states. [2020-09-21 12:34:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:45,559 INFO L93 Difference]: Finished difference Result 222 states and 288 transitions. [2020-09-21 12:34:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:34:45,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-09-21 12:34:45,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:45,563 INFO L225 Difference]: With dead ends: 222 [2020-09-21 12:34:45,564 INFO L226 Difference]: Without dead ends: 148 [2020-09-21 12:34:45,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:34:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-21 12:34:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 85. [2020-09-21 12:34:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-21 12:34:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 105 transitions. [2020-09-21 12:34:45,578 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 105 transitions. Word has length 39 [2020-09-21 12:34:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:45,578 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 105 transitions. [2020-09-21 12:34:45,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:34:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 105 transitions. [2020-09-21 12:34:45,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 12:34:45,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:45,580 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:34:45,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:34:45,581 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1603704047, now seen corresponding path program 2 times [2020-09-21 12:34:45,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:45,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446656485] [2020-09-21 12:34:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:45,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:45,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:45,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:46,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:46,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:46,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:46,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-21 12:34:46,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:34:46,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:34:46,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:34:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:34:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:34:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:46,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:46,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:46,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:46,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:46,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:34:46,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:46,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:46,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:46,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:46,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:34:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:46,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:46,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:34:46,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:34:46,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:34:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:46,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:46,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 12:34:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:46,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:46,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:46,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:46,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:46,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:34:46,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:34:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 12:34:46,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446656485] [2020-09-21 12:34:46,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:34:46,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:34:46,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790707120] [2020-09-21 12:34:46,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:34:46,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:46,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:34:46,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:34:46,684 INFO L87 Difference]: Start difference. First operand 85 states and 105 transitions. Second operand 7 states. [2020-09-21 12:34:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:47,036 INFO L93 Difference]: Finished difference Result 255 states and 334 transitions. [2020-09-21 12:34:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:34:47,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-09-21 12:34:47,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:47,039 INFO L225 Difference]: With dead ends: 255 [2020-09-21 12:34:47,040 INFO L226 Difference]: Without dead ends: 181 [2020-09-21 12:34:47,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:34:47,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-21 12:34:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 87. [2020-09-21 12:34:47,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-21 12:34:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2020-09-21 12:34:47,055 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 41 [2020-09-21 12:34:47,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:47,056 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2020-09-21 12:34:47,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:34:47,056 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2020-09-21 12:34:47,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-21 12:34:47,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:47,070 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:34:47,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:34:47,071 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:47,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:47,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1602745357, now seen corresponding path program 3 times [2020-09-21 12:34:47,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:47,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245383660] [2020-09-21 12:34:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:47,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:47,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:48,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:48,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 12:34:48,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:34:48,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:34:48,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:34:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:34:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:34:48,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:48,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:48,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:48,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:48,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:34:48,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:48,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:34:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:48,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:48,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:34:48,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:34:48,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:34:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:34:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:34:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-21 12:34:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:48,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:48,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:48,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:48,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:34:48,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:34:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:48,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:48,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 12:34:48,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245383660] [2020-09-21 12:34:48,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:34:48,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:34:48,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122372491] [2020-09-21 12:34:48,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:34:48,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:48,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:34:48,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:34:48,226 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand 7 states. [2020-09-21 12:34:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:48,365 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2020-09-21 12:34:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:34:48,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-21 12:34:48,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:48,366 INFO L225 Difference]: With dead ends: 107 [2020-09-21 12:34:48,366 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:34:48,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:34:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:34:48,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:34:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:34:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:34:48,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-09-21 12:34:48,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:48,368 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:34:48,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:34:48,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:34:48,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:34:48,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:34:48,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:34:48,673 INFO L271 CegarLoopResult]: At program point elem_existsENTRY(lines 9 15) the Hoare annotation is: true [2020-09-21 12:34:48,673 INFO L268 CegarLoopResult]: For program point elem_existsEXIT(lines 9 15) no Hoare annotation was computed. [2020-09-21 12:34:48,674 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-21 12:34:48,674 INFO L268 CegarLoopResult]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2020-09-21 12:34:48,674 INFO L268 CegarLoopResult]: For program point elem_existsFINAL(lines 9 15) no Hoare annotation was computed. [2020-09-21 12:34:48,674 INFO L264 CegarLoopResult]: At program point L11-3(lines 11 13) the Hoare annotation is: (and (<= 0 elem_exists_~i~0) (= elem_exists_~size |elem_exists_#in~size|)) [2020-09-21 12:34:48,674 INFO L268 CegarLoopResult]: For program point L11-4(lines 11 13) no Hoare annotation was computed. [2020-09-21 12:34:48,675 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:34:48,676 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-21 12:34:48,676 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:34:48,676 INFO L271 CegarLoopResult]: At program point insertENTRY(lines 5 8) the Hoare annotation is: true [2020-09-21 12:34:48,677 INFO L268 CegarLoopResult]: For program point insertFINAL(lines 5 8) no Hoare annotation was computed. [2020-09-21 12:34:48,677 INFO L268 CegarLoopResult]: For program point insertEXIT(lines 5 8) no Hoare annotation was computed. [2020-09-21 12:34:48,677 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:34:48,677 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:34:48,677 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:34:48,677 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:34:48,678 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 56) no Hoare annotation was computed. [2020-09-21 12:34:48,678 INFO L264 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: false [2020-09-21 12:34:48,678 INFO L268 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-09-21 12:34:48,678 INFO L268 CegarLoopResult]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2020-09-21 12:34:48,678 INFO L264 CegarLoopResult]: At program point L44-3(lines 44 48) the Hoare annotation is: (and (<= main_~n~0 0) (= main_~x~0 0)) [2020-09-21 12:34:48,679 INFO L268 CegarLoopResult]: For program point L36-2(lines 36 39) no Hoare annotation was computed. [2020-09-21 12:34:48,679 INFO L264 CegarLoopResult]: At program point L36-3(lines 36 39) the Hoare annotation is: (and (<= main_~n~0 0) (= main_~x~0 0)) [2020-09-21 12:34:48,679 INFO L268 CegarLoopResult]: For program point L36-4(lines 36 39) no Hoare annotation was computed. [2020-09-21 12:34:48,679 INFO L268 CegarLoopResult]: For program point L28-2(lines 28 32) no Hoare annotation was computed. [2020-09-21 12:34:48,679 INFO L264 CegarLoopResult]: At program point L28-3(lines 28 32) the Hoare annotation is: (and (<= main_~n~0 0) (= main_~x~0 0)) [2020-09-21 12:34:48,680 INFO L268 CegarLoopResult]: For program point L28-4(lines 28 32) no Hoare annotation was computed. [2020-09-21 12:34:48,681 INFO L268 CegarLoopResult]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2020-09-21 12:34:48,681 INFO L264 CegarLoopResult]: At program point L45-3(lines 45 47) the Hoare annotation is: false [2020-09-21 12:34:48,681 INFO L268 CegarLoopResult]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2020-09-21 12:34:48,681 INFO L264 CegarLoopResult]: At program point L29-3(lines 29 31) the Hoare annotation is: false [2020-09-21 12:34:48,681 INFO L264 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: false [2020-09-21 12:34:48,681 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-21 12:34:48,682 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 56) no Hoare annotation was computed. [2020-09-21 12:34:48,682 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: false [2020-09-21 12:34:48,682 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 56) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-21 12:34:48,682 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-21 12:34:48,682 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 25) no Hoare annotation was computed. [2020-09-21 12:34:48,683 INFO L264 CegarLoopResult]: At program point L22-3(lines 22 25) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~n~0 0)) [2020-09-21 12:34:48,683 INFO L268 CegarLoopResult]: For program point L22-4(lines 22 25) no Hoare annotation was computed. [2020-09-21 12:34:48,684 INFO L268 CegarLoopResult]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-09-21 12:34:48,684 INFO L264 CegarLoopResult]: At program point L40-3(lines 40 49) the Hoare annotation is: (and (<= main_~n~0 0) (= main_~x~0 0)) [2020-09-21 12:34:48,685 INFO L268 CegarLoopResult]: For program point L40-4(lines 40 49) no Hoare annotation was computed. [2020-09-21 12:34:48,685 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= main_~n~0 0) (= main_~x~0 0)) [2020-09-21 12:34:48,685 INFO L268 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-09-21 12:34:48,685 INFO L268 CegarLoopResult]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2020-09-21 12:34:48,685 INFO L268 CegarLoopResult]: For program point L41-4(lines 41 43) no Hoare annotation was computed. [2020-09-21 12:34:48,686 INFO L268 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-09-21 12:34:48,686 INFO L264 CegarLoopResult]: At program point L50-3(lines 50 54) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~n~0 0)) [2020-09-21 12:34:48,686 INFO L268 CegarLoopResult]: For program point L50-4(lines 50 54) no Hoare annotation was computed. [2020-09-21 12:34:48,686 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: false [2020-09-21 12:34:48,686 INFO L268 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-09-21 12:34:48,686 INFO L268 CegarLoopResult]: For program point L51-2(lines 51 53) no Hoare annotation was computed. [2020-09-21 12:34:48,686 INFO L264 CegarLoopResult]: At program point L51-3(lines 51 53) the Hoare annotation is: false [2020-09-21 12:34:48,687 INFO L268 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2020-09-21 12:34:48,687 INFO L268 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2020-09-21 12:34:48,687 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2020-09-21 12:34:48,687 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2020-09-21 12:34:48,688 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2020-09-21 12:34:48,688 INFO L268 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2020-09-21 12:34:48,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:34:48 BoogieIcfgContainer [2020-09-21 12:34:48,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:34:48,728 INFO L168 Benchmark]: Toolchain (without parser) took 11464.78 ms. Allocated memory was 147.3 MB in the beginning and 306.7 MB in the end (delta: 159.4 MB). Free memory was 104.1 MB in the beginning and 176.1 MB in the end (delta: -72.0 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:48,729 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:34:48,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.54 ms. Allocated memory is still 147.3 MB. Free memory was 103.5 MB in the beginning and 92.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:48,732 INFO L168 Benchmark]: Boogie Preprocessor took 148.23 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.4 MB in the beginning and 181.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:48,732 INFO L168 Benchmark]: RCFGBuilder took 488.31 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 157.3 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:48,735 INFO L168 Benchmark]: TraceAbstraction took 10448.23 ms. Allocated memory was 203.9 MB in the beginning and 306.7 MB in the end (delta: 102.8 MB). Free memory was 156.6 MB in the beginning and 176.1 MB in the end (delta: -19.5 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:48,747 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 369.54 ms. Allocated memory is still 147.3 MB. Free memory was 103.5 MB in the beginning and 92.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.23 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.4 MB in the beginning and 181.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.31 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 157.3 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10448.23 ms. Allocated memory was 203.9 MB in the beginning and 306.7 MB in the end (delta: 102.8 MB). Free memory was 156.6 MB in the beginning and 176.1 MB in the end (delta: -19.5 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 36]: Loop Invariant Derived loop invariant: n <= 0 && x == 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n <= x && n <= 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: n <= 0 && x == 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: n <= 0 && x == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 <= i && size == \old(size) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: n <= x && n <= 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: n <= 0 && x == 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 427 SDtfs, 418 SDslu, 574 SDs, 0 SdLazy, 931 SolverSat, 198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 236 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 86 PreInvPairs, 101 NumberOfFragments, 85 HoareAnnotationTreeSize, 86 FomulaSimplifications, 265 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 22 FomulaSimplificationsInter, 84 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 256 ConstructedInterpolants, 0 QuantifiedInterpolants, 15722 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 29/35 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...