/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:58:14,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:58:14,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:58:14,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:58:14,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:58:14,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:58:14,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:58:14,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:58:14,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:58:14,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:58:14,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:58:14,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:58:14,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:58:14,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:58:14,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:58:14,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:58:14,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:58:14,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:58:14,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:58:14,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:58:14,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:58:14,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:58:14,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:58:14,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:58:14,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:58:14,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:58:14,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:58:14,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:58:14,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:58:14,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:58:14,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:58:14,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:58:14,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:58:14,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:58:14,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:58:14,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:58:14,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:58:14,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:58:14,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:58:14,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:58:14,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:58:14,183 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 00:58:14,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:58:14,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:58:14,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:58:14,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:58:14,236 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:58:14,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:58:14,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:58:14,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:58:14,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:58:14,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:58:14,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:58:14,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:58:14,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:58:14,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:58:14,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:58:14,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:58:14,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:58:14,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:58:14,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:58:14,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:58:14,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:58:14,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:14,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:58:14,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:58:14,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:58:14,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:58:14,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:58:14,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:58:14,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:58:14,243 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:58:14,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:58:14,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:58:14,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:58:14,701 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:58:14,701 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:58:14,702 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-25 00:58:14,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db4c3fbd4/207e85abc181447698ae1961bc9fcea7/FLAGf163f42f2 [2020-09-25 00:58:15,262 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:58:15,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-25 00:58:15,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db4c3fbd4/207e85abc181447698ae1961bc9fcea7/FLAGf163f42f2 [2020-09-25 00:58:15,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db4c3fbd4/207e85abc181447698ae1961bc9fcea7 [2020-09-25 00:58:15,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:58:15,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:58:15,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:15,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:58:15,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:58:15,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:15" (1/1) ... [2020-09-25 00:58:15,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e780a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:15, skipping insertion in model container [2020-09-25 00:58:15,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:15" (1/1) ... [2020-09-25 00:58:15,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:58:15,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:58:15,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:15,943 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:58:15,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:15,984 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:58:15,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:15 WrapperNode [2020-09-25 00:58:15,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:15,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:58:15,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:58:15,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:58:16,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:15" (1/1) ... [2020-09-25 00:58:16,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:15" (1/1) ... [2020-09-25 00:58:16,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:15" (1/1) ... [2020-09-25 00:58:16,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:15" (1/1) ... [2020-09-25 00:58:16,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:15" (1/1) ... [2020-09-25 00:58:16,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:15" (1/1) ... [2020-09-25 00:58:16,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:15" (1/1) ... [2020-09-25 00:58:16,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:58:16,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:58:16,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:58:16,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:58:16,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:15" (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 00:58:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:58:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:58:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 00:58:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-09-25 00:58:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 00:58:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:58:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:58:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:58:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 00:58:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 00:58:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:58:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-09-25 00:58:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 00:58:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:58:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:58:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:58:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:58:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 00:58:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:58:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:58:16,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:58:16,594 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 00:58:16,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:16 BoogieIcfgContainer [2020-09-25 00:58:16,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:58:16,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:58:16,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:58:16,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:58:16,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:58:15" (1/3) ... [2020-09-25 00:58:16,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478083dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:16, skipping insertion in model container [2020-09-25 00:58:16,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:15" (2/3) ... [2020-09-25 00:58:16,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478083dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:16, skipping insertion in model container [2020-09-25 00:58:16,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:16" (3/3) ... [2020-09-25 00:58:16,608 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-09-25 00:58:16,620 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:58:16,630 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:58:16,652 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:58:16,681 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:58:16,681 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:58:16,681 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:58:16,681 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:58:16,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:58:16,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:58:16,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:58:16,682 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:58:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-25 00:58:16,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 00:58:16,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:16,714 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:16,714 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash 2026025413, now seen corresponding path program 1 times [2020-09-25 00:58:16,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:16,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674581464] [2020-09-25 00:58:16,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:16,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:17,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:17,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:18,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:18,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 00:58:18,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:58:18,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1554 [2020-09-25 00:58:18,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 00:58:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:18,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:58:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:18,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:18,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 00:58:18,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:18,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:58:18,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:18,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 00:58:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:18,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:18,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:18,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:58:18,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:18,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:58:18,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:18,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:18,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:18,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:18,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:58:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:18,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:18,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:18,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:18,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:18,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:58:18,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:18,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:18,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:18,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:18,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 00:58:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:18,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:18,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:18,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:18,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:18,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:58:18,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:18,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:18,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:18,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:18,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:18,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 00:58:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:18,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:18,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:18,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:18,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:18,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:58:18,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:18,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:18,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:18,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 00:58:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:18,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:18,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:18,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:18,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:18,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:58:18,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:18,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:18,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:58:18,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:18,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 00:58:18,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674581464] [2020-09-25 00:58:18,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:18,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:58:18,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164685067] [2020-09-25 00:58:18,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:58:18,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:18,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:58:18,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:18,748 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-09-25 00:58:19,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:19,059 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2020-09-25 00:58:19,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:58:19,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-09-25 00:58:19,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:19,078 INFO L225 Difference]: With dead ends: 107 [2020-09-25 00:58:19,078 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 00:58:19,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:58:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 00:58:19,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-25 00:58:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 00:58:19,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-09-25 00:58:19,175 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 83 [2020-09-25 00:58:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:19,185 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-09-25 00:58:19,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:58:19,192 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-09-25 00:58:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 00:58:19,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:19,202 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:19,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:58:19,203 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:19,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:19,203 INFO L82 PathProgramCache]: Analyzing trace with hash 177245466, now seen corresponding path program 1 times [2020-09-25 00:58:19,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:19,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83438847] [2020-09-25 00:58:19,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:19,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:19,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:24,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:24,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 00:58:24,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:58:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 00:58:24,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:58:24,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 00:58:24,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 00:58:24,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:24,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:24,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:24,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:24,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 00:58:24,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:24,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:58:24,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:24,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:24,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 00:58:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:24,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:24,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:24,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:58:24,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:24,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:58:24,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:24,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:58:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:24,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:24,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:24,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:58:24,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:24,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 00:58:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:24,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:24,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:24,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:24,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:58:24,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:24,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:24,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:24,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:24,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 00:58:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:24,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:24,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:24,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:24,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:24,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:58:24,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:24,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:24,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 00:58:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:24,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:24,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:24,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:24,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:58:24,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:58:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 00:58:24,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83438847] [2020-09-25 00:58:24,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:24,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:58:24,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599869961] [2020-09-25 00:58:24,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:58:24,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:24,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:58:24,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:58:24,422 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 5 states. [2020-09-25 00:58:24,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:24,709 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2020-09-25 00:58:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:58:24,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-09-25 00:58:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:24,712 INFO L225 Difference]: With dead ends: 106 [2020-09-25 00:58:24,712 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 00:58:24,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:58:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 00:58:24,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-25 00:58:24,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 00:58:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-09-25 00:58:24,725 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 85 [2020-09-25 00:58:24,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:24,725 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-09-25 00:58:24,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:58:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-09-25 00:58:24,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:58:24,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:24,727 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:24,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:58:24,728 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:24,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:24,728 INFO L82 PathProgramCache]: Analyzing trace with hash 679818391, now seen corresponding path program 1 times [2020-09-25 00:58:24,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:24,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554592417] [2020-09-25 00:58:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:24,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:24,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:28,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:28,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 00:58:28,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:58:28,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3324 [2020-09-25 00:58:28,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:28,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:58:28,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 00:58:28,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:58:28,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:28,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:28,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:28,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:28,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 00:58:28,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:28,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:58:28,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:28,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:28,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:28,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 00:58:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:28,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:28,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:28,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:58:28,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:28,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:58:28,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:28,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:58:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:28,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:28,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:28,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:58:28,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:28,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:28,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 00:58:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:28,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:28,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:28,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:28,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:28,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 00:58:28,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:58:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:58:28,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:28,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 00:58:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:28,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:28,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:28,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:28,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 00:58:28,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:58:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:58:28,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:28,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 00:58:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:28,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:28,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:58:28,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:58:28,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:28,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:58:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:28,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 00:58:28,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554592417] [2020-09-25 00:58:28,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:28,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-25 00:58:28,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121227162] [2020-09-25 00:58:28,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:58:28,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:28,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:58:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:58:28,537 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 16 states. [2020-09-25 00:58:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:30,386 INFO L93 Difference]: Finished difference Result 164 states and 173 transitions. [2020-09-25 00:58:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 00:58:30,387 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 87 [2020-09-25 00:58:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:30,391 INFO L225 Difference]: With dead ends: 164 [2020-09-25 00:58:30,391 INFO L226 Difference]: Without dead ends: 150 [2020-09-25 00:58:30,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=182, Invalid=874, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 00:58:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-25 00:58:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 105. [2020-09-25 00:58:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-25 00:58:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 112 transitions. [2020-09-25 00:58:30,409 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 112 transitions. Word has length 87 [2020-09-25 00:58:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:30,409 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 112 transitions. [2020-09-25 00:58:30,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:58:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 112 transitions. [2020-09-25 00:58:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:58:30,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:30,412 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:30,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:58:30,412 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:30,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2022406921, now seen corresponding path program 1 times [2020-09-25 00:58:30,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:30,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356856713] [2020-09-25 00:58:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:58:30,439 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:58:30,439 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:58:30,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:58:30,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:58:30 BoogieIcfgContainer [2020-09-25 00:58:30,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:58:30,470 INFO L168 Benchmark]: Toolchain (without parser) took 14854.93 ms. Allocated memory was 140.5 MB in the beginning and 342.4 MB in the end (delta: 201.9 MB). Free memory was 103.5 MB in the beginning and 260.7 MB in the end (delta: -157.2 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:30,471 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-25 00:58:30,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.89 ms. Allocated memory is still 140.5 MB. Free memory was 103.0 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:30,473 INFO L168 Benchmark]: Boogie Preprocessor took 146.89 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 180.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:30,474 INFO L168 Benchmark]: RCFGBuilder took 465.82 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 158.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:30,475 INFO L168 Benchmark]: TraceAbstraction took 13866.15 ms. Allocated memory was 203.4 MB in the beginning and 342.4 MB in the end (delta: 138.9 MB). Free memory was 157.2 MB in the beginning and 260.7 MB in the end (delta: -103.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:30,479 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 363.89 ms. Allocated memory is still 140.5 MB. Free memory was 103.0 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.89 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 180.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.82 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 158.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13866.15 ms. Allocated memory was 203.4 MB in the beginning and 342.4 MB in the end (delta: 138.9 MB). Free memory was 157.2 MB in the beginning and 260.7 MB in the end (delta: -103.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; [L32] CALL init() [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) [L38] COND FALSE !(i < *pa) [L41] CALL, EXPR check(pd2, i) [L27] EXPR s1->a [L27] return s1->a == i; [L41] RET, EXPR check(pd2, i) [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 203 SDtfs, 450 SDslu, 85 SDs, 0 SdLazy, 1326 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=3, 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, 45 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 342 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 44238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 63/63 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 incorrect! Received shutdown request...