/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:18:17,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:18:17,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:18:17,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:18:17,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:18:17,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:18:17,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:18:17,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:18:17,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:18:17,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:18:17,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:18:17,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:18:17,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:18:17,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:18:17,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:18:17,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:18:17,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:18:17,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:18:17,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:18:17,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:18:17,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:18:17,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:18:17,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:18:17,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:18:17,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:18:17,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:18:17,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:18:17,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:18:17,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:18:17,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:18:17,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:18:17,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:18:17,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:18:17,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:18:17,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:18:17,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:18:17,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:18:17,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:18:17,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:18:17,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:18:17,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:18:17,611 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 [2020-09-25 10:18:17,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:18:17,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:18:17,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:18:17,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:18:17,660 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:18:17,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:18:17,661 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:18:17,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:18:17,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:18:17,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:18:17,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:18:17,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:18:17,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:18:17,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:18:17,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:18:17,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:18:17,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:18:17,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:18:17,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:18:17,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:18:17,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:18:17,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:18:17,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:18:17,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:18:17,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:18:17,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:18:17,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:18:17,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:18:17,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:18:17,667 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.rcfgbuilder: Size of a code block -> SingleStatement 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:18:18,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:18:18,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:18:18,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:18:18,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:18:18,152 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:18:18,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-25 10:18:18,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8907c8f7a/84e9526c171d436b8e72901ed3106f23/FLAG753147da7 [2020-09-25 10:18:18,799 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:18:18,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-25 10:18:18,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8907c8f7a/84e9526c171d436b8e72901ed3106f23/FLAG753147da7 [2020-09-25 10:18:19,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8907c8f7a/84e9526c171d436b8e72901ed3106f23 [2020-09-25 10:18:19,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:18:19,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:18:19,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:18:19,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:18:19,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:18:19,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7cadc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19, skipping insertion in model container [2020-09-25 10:18:19,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:18:19,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:18:19,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:18:19,447 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:18:19,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:18:19,483 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:18:19,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19 WrapperNode [2020-09-25 10:18:19,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:18:19,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:18:19,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:18:19,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:18:19,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:18:19,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:18:19,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:18:19,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:18:19,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (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 [2020-09-25 10:18:19,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:18:19,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:18:19,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:18:19,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:18:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:18:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:18:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:18:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:18:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:18:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:18:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:18:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:18:19,934 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:18:19,935 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:18:19,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:19 BoogieIcfgContainer [2020-09-25 10:18:19,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:18:19,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:18:19,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:18:19,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:18:19,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:18:19" (1/3) ... [2020-09-25 10:18:19,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba1e3a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:19, skipping insertion in model container [2020-09-25 10:18:19,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (2/3) ... [2020-09-25 10:18:19,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba1e3a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:19, skipping insertion in model container [2020-09-25 10:18:19,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:19" (3/3) ... [2020-09-25 10:18:19,952 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-09-25 10:18:19,965 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:18:19,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:18:20,001 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:18:20,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:18:20,036 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:18:20,036 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:18:20,036 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:18:20,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:18:20,037 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:18:20,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:18:20,037 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:18:20,059 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-25 10:18:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 10:18:20,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:20,069 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] [2020-09-25 10:18:20,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:20,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:20,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1819653980, now seen corresponding path program 1 times [2020-09-25 10:18:20,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:20,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420837352] [2020-09-25 10:18:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:20,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:20,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 10:18:20,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:18:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-09-25 10:18:20,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:20,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:18:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:18:20,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:18:20,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:18:20,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:20,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:20,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:18:20,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:18:20,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:20,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:20,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:20,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:20,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:20,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:20,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420837352] [2020-09-25 10:18:20,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:18:20,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 10:18:20,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759070513] [2020-09-25 10:18:20,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:18:20,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:20,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:18:20,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:18:20,999 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 9 states. [2020-09-25 10:18:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:21,435 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-09-25 10:18:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:18:21,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-09-25 10:18:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:21,474 INFO L225 Difference]: With dead ends: 65 [2020-09-25 10:18:21,475 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 10:18:21,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:18:21,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 10:18:21,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-09-25 10:18:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 10:18:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-25 10:18:21,551 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2020-09-25 10:18:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:21,552 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-25 10:18:21,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:18:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-25 10:18:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 10:18:21,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:21,554 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:18:21,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:18:21,555 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:21,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:21,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1522824151, now seen corresponding path program 1 times [2020-09-25 10:18:21,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:21,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020794763] [2020-09-25 10:18:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:22,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:18:22,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:18:22,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-09-25 10:18:22,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:22,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:22,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:18:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:18:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:18:22,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:22,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:22,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:22,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:18:22,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:18:22,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:22,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:22,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:22,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020794763] [2020-09-25 10:18:22,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:22,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:18:22,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378487847] [2020-09-25 10:18:22,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:18:22,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:22,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:18:22,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:18:22,408 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 11 states. [2020-09-25 10:18:22,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:22,646 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-09-25 10:18:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:18:22,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-25 10:18:22,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:22,648 INFO L225 Difference]: With dead ends: 49 [2020-09-25 10:18:22,649 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 10:18:22,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:18:22,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 10:18:22,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-09-25 10:18:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 10:18:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-25 10:18:22,657 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-25 10:18:22,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:22,658 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-25 10:18:22,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:18:22,658 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-25 10:18:22,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 10:18:22,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:22,660 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:22,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:18:22,661 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:22,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:22,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1421125650, now seen corresponding path program 2 times [2020-09-25 10:18:22,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:22,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126653631] [2020-09-25 10:18:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:22,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:24,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:24,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:18:24,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:18:24,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1451 [2020-09-25 10:18:24,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:24,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:18:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:18:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:18:24,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:24,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:24,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:24,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:18:24,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:24,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:18:24,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:24,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:24,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:24,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:24,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:24,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:24,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126653631] [2020-09-25 10:18:24,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:24,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:18:24,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055090317] [2020-09-25 10:18:24,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:18:24,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:24,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:18:24,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:18:24,351 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 13 states. [2020-09-25 10:18:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:24,731 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-09-25 10:18:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:18:24,732 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-09-25 10:18:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:24,733 INFO L225 Difference]: With dead ends: 55 [2020-09-25 10:18:24,733 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 10:18:24,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:18:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 10:18:24,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-09-25 10:18:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 10:18:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-09-25 10:18:24,741 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2020-09-25 10:18:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:24,742 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-09-25 10:18:24,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:18:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-09-25 10:18:24,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 10:18:24,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:24,744 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:24,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:18:24,745 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:24,745 INFO L82 PathProgramCache]: Analyzing trace with hash -264078349, now seen corresponding path program 3 times [2020-09-25 10:18:24,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:24,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445749278] [2020-09-25 10:18:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:24,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:24,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:25,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 10:18:25,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:18:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 972 [2020-09-25 10:18:25,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:25,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:18:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:18:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:18:25,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:25,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:25,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:25,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:25,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:18:25,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:25,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:25,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:25,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:25,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445749278] [2020-09-25 10:18:25,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:25,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:18:25,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808025998] [2020-09-25 10:18:25,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:18:25,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:25,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:18:25,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:18:25,934 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 15 states. [2020-09-25 10:18:26,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:26,258 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-09-25 10:18:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:18:26,258 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-09-25 10:18:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:26,260 INFO L225 Difference]: With dead ends: 61 [2020-09-25 10:18:26,260 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 10:18:26,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:18:26,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 10:18:26,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-09-25 10:18:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 10:18:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2020-09-25 10:18:26,268 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 46 [2020-09-25 10:18:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:26,268 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2020-09-25 10:18:26,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:18:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-09-25 10:18:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 10:18:26,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:26,270 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:26,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:18:26,270 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:26,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:26,271 INFO L82 PathProgramCache]: Analyzing trace with hash -926037960, now seen corresponding path program 4 times [2020-09-25 10:18:26,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:26,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186556331] [2020-09-25 10:18:26,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:26,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:27,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:27,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 10:18:27,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:18:27,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-09-25 10:18:27,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:27,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:18:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:18:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:18:27,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:27,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:27,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:27,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:18:27,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:27,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:27,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:27,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:27,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186556331] [2020-09-25 10:18:27,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:27,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:18:27,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447751955] [2020-09-25 10:18:27,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:18:27,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:27,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:18:27,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:18:27,753 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 17 states. [2020-09-25 10:18:28,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:28,104 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-09-25 10:18:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:18:28,105 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-09-25 10:18:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:28,107 INFO L225 Difference]: With dead ends: 67 [2020-09-25 10:18:28,107 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 10:18:28,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:18:28,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 10:18:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-09-25 10:18:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 10:18:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-09-25 10:18:28,115 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 52 [2020-09-25 10:18:28,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:28,116 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-09-25 10:18:28,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:18:28,116 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-09-25 10:18:28,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 10:18:28,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:28,117 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:28,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:18:28,117 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:28,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:28,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1757285565, now seen corresponding path program 5 times [2020-09-25 10:18:28,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:28,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164303093] [2020-09-25 10:18:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:28,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:29,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:30,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:30,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:18:30,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:18:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2067 [2020-09-25 10:18:30,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:30,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:18:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:18:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 10:18:30,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:30,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:30,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:18:30,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:30,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:30,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:30,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:30,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164303093] [2020-09-25 10:18:30,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:30,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:18:30,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16948846] [2020-09-25 10:18:30,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:18:30,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:30,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:18:30,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:18:30,460 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 19 states. [2020-09-25 10:18:30,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:30,879 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-09-25 10:18:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:18:30,880 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-09-25 10:18:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:30,881 INFO L225 Difference]: With dead ends: 73 [2020-09-25 10:18:30,881 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 10:18:30,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:18:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 10:18:30,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-09-25 10:18:30,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 10:18:30,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2020-09-25 10:18:30,894 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2020-09-25 10:18:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:30,897 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2020-09-25 10:18:30,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 10:18:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2020-09-25 10:18:30,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 10:18:30,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:30,899 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:30,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:18:30,900 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:30,900 INFO L82 PathProgramCache]: Analyzing trace with hash -133686910, now seen corresponding path program 6 times [2020-09-25 10:18:30,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:30,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44473262] [2020-09-25 10:18:30,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:18:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:18:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-09-25 10:18:32,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:32,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:18:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:18:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 10:18:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:32,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:32,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:32,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:18:32,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:18:32,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:32,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:32,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:32,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44473262] [2020-09-25 10:18:32,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:32,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:18:32,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398312964] [2020-09-25 10:18:32,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:18:32,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:32,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:18:32,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:18:32,795 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 21 states. [2020-09-25 10:18:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:33,309 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-09-25 10:18:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 10:18:33,310 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-09-25 10:18:33,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:33,312 INFO L225 Difference]: With dead ends: 79 [2020-09-25 10:18:33,313 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 10:18:33,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2020-09-25 10:18:33,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 10:18:33,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-09-25 10:18:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 10:18:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-09-25 10:18:33,323 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 64 [2020-09-25 10:18:33,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:33,327 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-09-25 10:18:33,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 10:18:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-09-25 10:18:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 10:18:33,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:33,328 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:33,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:18:33,331 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:33,331 INFO L82 PathProgramCache]: Analyzing trace with hash -406536569, now seen corresponding path program 7 times [2020-09-25 10:18:33,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:33,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996075075] [2020-09-25 10:18:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:33,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:33,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:33,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:33,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:35,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:35,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:18:35,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:18:35,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2536 [2020-09-25 10:18:35,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:35,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:35,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:18:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:18:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 10:18:35,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:36,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:36,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:36,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:36,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:18:36,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:36,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:36,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:36,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996075075] [2020-09-25 10:18:36,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:36,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 10:18:36,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037247139] [2020-09-25 10:18:36,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 10:18:36,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:36,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 10:18:36,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:18:36,254 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 23 states. [2020-09-25 10:18:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:37,512 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2020-09-25 10:18:37,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 10:18:37,513 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 70 [2020-09-25 10:18:37,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:37,514 INFO L225 Difference]: With dead ends: 74 [2020-09-25 10:18:37,514 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:18:37,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=593, Invalid=2059, Unknown=0, NotChecked=0, Total=2652 [2020-09-25 10:18:37,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:18:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:18:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:18:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:18:37,517 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2020-09-25 10:18:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:37,517 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:18:37,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 10:18:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:18:37,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:18:37,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:18:37,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:18:37,628 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:18:37,628 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 10:18:37,628 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 10:18:37,629 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-09-25 10:18:37,629 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:18:37,629 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:18:37,629 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:18:37,629 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:18:37,629 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:18:37,630 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 10:18:37,630 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 10:18:37,630 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 10:18:37,630 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 10:18:37,630 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 10:18:37,630 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 10:18:37,630 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-25 10:18:37,630 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 72) no Hoare annotation was computed. [2020-09-25 10:18:37,631 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-25 10:18:37,631 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 10:18:37,631 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-25 10:18:37,631 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 10:18:37,631 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 10:18:37,631 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 10:18:37,631 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 10:18:37,632 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 72) no Hoare annotation was computed. [2020-09-25 10:18:37,633 INFO L264 CegarLoopResult]: At program point L44(lines 31 65) the Hoare annotation is: (or (and (<= (+ main_~main__x~0 2) main_~main__y~0) (<= (+ main_~main__x~0 37) (* 8 main_~main__y~0))) (<= (+ main_~main__x~0 51) main_~main__y~0)) [2020-09-25 10:18:37,633 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 10:18:37,633 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 10:18:37,633 INFO L268 CegarLoopResult]: For program point L38(lines 38 64) no Hoare annotation was computed. [2020-09-25 10:18:37,633 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 10:18:37,633 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 10:18:37,634 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 55) no Hoare annotation was computed. [2020-09-25 10:18:37,634 INFO L268 CegarLoopResult]: For program point L30(lines 30 69) no Hoare annotation was computed. [2020-09-25 10:18:37,634 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-09-25 10:18:37,634 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-09-25 10:18:37,634 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 10:18:37,634 INFO L268 CegarLoopResult]: For program point L24(lines 24 70) no Hoare annotation was computed. [2020-09-25 10:18:37,635 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-25 10:18:37,635 INFO L268 CegarLoopResult]: For program point L53(lines 53 62) no Hoare annotation was computed. [2020-09-25 10:18:37,635 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 10:18:37,635 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 10:18:37,635 INFO L268 CegarLoopResult]: For program point L18(lines 18 71) no Hoare annotation was computed. [2020-09-25 10:18:37,635 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-25 10:18:37,635 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 10:18:37,635 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 10:18:37,636 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 10:18:37,636 INFO L268 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-09-25 10:18:37,636 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 10:18:37,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:18:37 BoogieIcfgContainer [2020-09-25 10:18:37,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:18:37,671 INFO L168 Benchmark]: Toolchain (without parser) took 18491.38 ms. Allocated memory was 138.9 MB in the beginning and 349.2 MB in the end (delta: 210.2 MB). Free memory was 100.5 MB in the beginning and 101.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 209.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:37,673 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 10:18:37,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.86 ms. Allocated memory is still 138.9 MB. Free memory was 99.9 MB in the beginning and 90.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:37,675 INFO L168 Benchmark]: Boogie Preprocessor took 108.96 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.1 MB in the beginning and 180.5 MB in the end (delta: -90.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:37,676 INFO L168 Benchmark]: RCFGBuilder took 347.39 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 166.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:37,679 INFO L168 Benchmark]: TraceAbstraction took 17719.66 ms. Allocated memory was 201.9 MB in the beginning and 349.2 MB in the end (delta: 147.3 MB). Free memory was 165.4 MB in the beginning and 101.6 MB in the end (delta: 63.8 MB). Peak memory consumption was 211.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:37,691 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.86 ms. Allocated memory is still 138.9 MB. Free memory was 99.9 MB in the beginning and 90.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.96 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.1 MB in the beginning and 180.5 MB in the end (delta: -90.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 347.39 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 166.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17719.66 ms. Allocated memory was 201.9 MB in the beginning and 349.2 MB in the end (delta: 147.3 MB). Free memory was 165.4 MB in the beginning and 101.6 MB in the end (delta: 63.8 MB). Peak memory consumption was 211.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: 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: 31]: Loop Invariant Derived loop invariant: (main__x + 2 <= main__y && main__x + 37 <= 8 * main__y) || main__x + 51 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.4s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 236 SDtfs, 431 SDslu, 1277 SDs, 0 SdLazy, 2600 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 7 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 38 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 129 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 392 NumberOfCodeBlocks, 392 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 384 ConstructedInterpolants, 0 QuantifiedInterpolants, 101433 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 0/392 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...