/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:09:40,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:09:40,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:09:40,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:09:40,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:09:40,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:09:40,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:09:40,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:09:40,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:09:40,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:09:40,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:09:40,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:09:40,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:09:40,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:09:40,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:09:40,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:09:40,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:09:40,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:09:40,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:09:40,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:09:40,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:09:40,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:09:40,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:09:40,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:09:40,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:09:40,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:09:40,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:09:40,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:09:40,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:09:40,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:09:40,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:09:40,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:09:40,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:09:40,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:09:40,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:09:40,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:09:40,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:09:40,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:09:40,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:09:40,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:09:40,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:09:40,142 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 [2020-10-15 02:09:40,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:09:40,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:09:40,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:09:40,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:09:40,166 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:09:40,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:09:40,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:09:40,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:09:40,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:09:40,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:09:40,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:09:40,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:09:40,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:09:40,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:09:40,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:09:40,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:09:40,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:09:40,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:09:40,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:09:40,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:09:40,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:09:40,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:09:40,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:09:40,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:09:40,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:09:40,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:09:40,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:09:40,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:09:40,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:09:40,170 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:09:40,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:09:40,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:09:40,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:09:40,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:09:40,497 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:09:40,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2020-10-15 02:09:40,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/546364848/93e22792a5f84d3f8d7308bce67c9659/FLAG30821c61d [2020-10-15 02:09:41,058 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:09:41,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2020-10-15 02:09:41,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/546364848/93e22792a5f84d3f8d7308bce67c9659/FLAG30821c61d [2020-10-15 02:09:41,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/546364848/93e22792a5f84d3f8d7308bce67c9659 [2020-10-15 02:09:41,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:09:41,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:09:41,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:09:41,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:09:41,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:09:41,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:09:41" (1/1) ... [2020-10-15 02:09:41,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4f371a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:41, skipping insertion in model container [2020-10-15 02:09:41,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:09:41" (1/1) ... [2020-10-15 02:09:41,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:09:41,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:09:41,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:09:41,694 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:09:41,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:09:41,720 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:09:41,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:41 WrapperNode [2020-10-15 02:09:41,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:09:41,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:09:41,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:09:41,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:09:41,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:41" (1/1) ... [2020-10-15 02:09:41,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:41" (1/1) ... [2020-10-15 02:09:41,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:41" (1/1) ... [2020-10-15 02:09:41,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:41" (1/1) ... [2020-10-15 02:09:41,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:41" (1/1) ... [2020-10-15 02:09:41,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:41" (1/1) ... [2020-10-15 02:09:41,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:41" (1/1) ... [2020-10-15 02:09:41,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:09:41,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:09:41,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:09:41,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:09:41,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:41" (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 [2020-10-15 02:09:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:09:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:09:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-15 02:09:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-10-15 02:09:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:09:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-15 02:09:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:09:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-15 02:09:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-10-15 02:09:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:09:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:09:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:09:42,103 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:09:42,104 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:09:42,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:09:42 BoogieIcfgContainer [2020-10-15 02:09:42,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:09:42,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:09:42,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:09:42,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:09:42,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:09:41" (1/3) ... [2020-10-15 02:09:42,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a6966b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:09:42, skipping insertion in model container [2020-10-15 02:09:42,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:41" (2/3) ... [2020-10-15 02:09:42,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a6966b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:09:42, skipping insertion in model container [2020-10-15 02:09:42,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:09:42" (3/3) ... [2020-10-15 02:09:42,118 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b5_o10.c [2020-10-15 02:09:42,130 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:09:42,137 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:09:42,157 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:09:42,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:09:42,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:09:42,190 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:09:42,190 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:09:42,190 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:09:42,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:09:42,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:09:42,191 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:09:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-15 02:09:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 02:09:42,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:42,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:42,229 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:42,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:42,236 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2020-10-15 02:09:42,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:42,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856167107] [2020-10-15 02:09:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:42,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:42,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:42,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 02:09:42,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:42,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-15 02:09:42,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:42,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:09:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 02:09:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:09:42,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:09:42,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:42,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:42,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:42,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:42,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:42,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:09:42,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:42,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:42,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:42,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:42,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:42,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:42,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:42,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 02:09:42,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:42,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:09:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:09:42,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:09:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:09:42,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856167107] [2020-10-15 02:09:42,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:09:42,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:09:42,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742643009] [2020-10-15 02:09:42,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:09:42,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:42,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:09:42,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:09:42,689 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-10-15 02:09:42,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:42,747 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-15 02:09:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:09:42,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 02:09:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:42,761 INFO L225 Difference]: With dead ends: 40 [2020-10-15 02:09:42,761 INFO L226 Difference]: Without dead ends: 26 [2020-10-15 02:09:42,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:09:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-15 02:09:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-15 02:09:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-15 02:09:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-15 02:09:42,816 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2020-10-15 02:09:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:42,816 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-15 02:09:42,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:09:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-15 02:09:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 02:09:42,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:42,819 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] [2020-10-15 02:09:42,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:09:42,820 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:42,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:42,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2020-10-15 02:09:42,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:42,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99563957] [2020-10-15 02:09:42,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:42,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:42,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:43,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:43,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:09:43,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-15 02:09:43,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:43,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:09:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 02:09:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:09:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:09:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:43,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:43,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:43,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:43,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:43,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:43,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:43,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:43,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:43,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:43,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:09:43,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:43,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 02:09:43,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:43,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:09:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:09:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:09:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:43,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:43,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:43,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:43,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:43,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:09:43,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:43,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:09:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:09:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:09:43,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99563957] [2020-10-15 02:09:43,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:09:43,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:09:43,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089725670] [2020-10-15 02:09:43,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:09:43,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:43,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:09:43,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:09:43,324 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-10-15 02:09:43,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:43,354 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-10-15 02:09:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:09:43,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-15 02:09:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:43,357 INFO L225 Difference]: With dead ends: 44 [2020-10-15 02:09:43,357 INFO L226 Difference]: Without dead ends: 32 [2020-10-15 02:09:43,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:09:43,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-15 02:09:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-15 02:09:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-15 02:09:43,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-15 02:09:43,367 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2020-10-15 02:09:43,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:43,368 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-15 02:09:43,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:09:43,368 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-15 02:09:43,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 02:09:43,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:43,370 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] [2020-10-15 02:09:43,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:09:43,370 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:43,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:43,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2020-10-15 02:09:43,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:43,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410615073] [2020-10-15 02:09:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:43,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:43,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:09:43,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:43,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 02:09:43,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:43,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:43,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:09:43,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-15 02:09:43,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:09:43,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:43,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:43,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:43,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:43,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:43,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:43,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:43,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:43,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:43,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:43,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:09:43,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:43,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 02:09:43,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:43,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:09:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:09:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:43,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:43,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:43,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:43,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:43,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:09:43,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:43,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:43,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:09:43,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410615073] [2020-10-15 02:09:43,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:09:43,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:09:43,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440639775] [2020-10-15 02:09:43,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:09:43,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:43,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:09:43,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:09:43,545 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-15 02:09:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:43,559 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-10-15 02:09:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:09:43,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-15 02:09:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:43,560 INFO L225 Difference]: With dead ends: 30 [2020-10-15 02:09:43,560 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 02:09:43,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:09:43,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 02:09:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 02:09:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 02:09:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 02:09:43,562 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-15 02:09:43,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:43,562 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 02:09:43,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:09:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 02:09:43,563 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 02:09:43,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:09:43,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-15 02:09:43,591 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-15 02:09:43,592 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-15 02:09:43,592 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-10-15 02:09:43,592 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-10-15 02:09:43,592 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-15 02:09:43,592 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-10-15 02:09:43,592 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-10-15 02:09:43,593 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-10-15 02:09:43,593 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-10-15 02:09:43,593 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-15 02:09:43,593 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-15 02:09:43,593 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-15 02:09:43,593 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-15 02:09:43,594 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-10-15 02:09:43,594 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-10-15 02:09:43,594 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-15 02:09:43,594 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-10-15 02:09:43,594 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-10-15 02:09:43,594 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-10-15 02:09:43,594 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-15 02:09:43,595 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-10-15 02:09:43,595 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-10-15 02:09:43,595 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-10-15 02:09:43,595 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-15 02:09:43,595 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-10-15 02:09:43,595 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-15 02:09:43,596 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-10-15 02:09:43,596 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-10-15 02:09:43,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:09:43 BoogieIcfgContainer [2020-10-15 02:09:43,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 02:09:43,605 INFO L168 Benchmark]: Toolchain (without parser) took 2152.64 ms. Allocated memory was 147.8 MB in the beginning and 232.8 MB in the end (delta: 84.9 MB). Free memory was 103.1 MB in the beginning and 173.2 MB in the end (delta: -70.1 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:43,606 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-15 02:09:43,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.03 ms. Allocated memory is still 147.8 MB. Free memory was 103.1 MB in the beginning and 92.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:43,608 INFO L168 Benchmark]: Boogie Preprocessor took 120.81 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 92.9 MB in the beginning and 183.8 MB in the end (delta: -90.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:43,609 INFO L168 Benchmark]: RCFGBuilder took 266.30 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 171.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:43,610 INFO L168 Benchmark]: TraceAbstraction took 1491.98 ms. Allocated memory was 205.0 MB in the beginning and 232.8 MB in the end (delta: 27.8 MB). Free memory was 170.1 MB in the beginning and 173.2 MB in the end (delta: -3.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:43,614 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.03 ms. Allocated memory is still 147.8 MB. Free memory was 103.1 MB in the beginning and 92.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.81 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 92.9 MB in the beginning and 183.8 MB in the end (delta: -90.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.30 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 171.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1491.98 ms. Allocated memory was 205.0 MB in the beginning and 232.8 MB in the end (delta: 27.8 MB). Free memory was 170.1 MB in the beginning and 173.2 MB in the end (delta: -3.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 4 SDslu, 235 SDs, 0 SdLazy, 25 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...