/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_14-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:10:45,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:10:45,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:10:45,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:10:45,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:10:45,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:10:45,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:10:45,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:10:45,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:10:45,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:10:45,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:10:45,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:10:45,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:10:45,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:10:45,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:10:45,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:10:45,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:10:45,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:10:45,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:10:45,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:10:45,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:10:45,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:10:45,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:10:45,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:10:45,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:10:45,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:10:45,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:10:45,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:10:45,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:10:45,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:10:45,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:10:45,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:10:45,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:10:45,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:10:45,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:10:45,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:10:45,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:10:45,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:10:45,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:10:45,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:10:45,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:10:45,298 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 11:10:45,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:10:45,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:10:45,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:10:45,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:10:45,349 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:10:45,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:10:45,350 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:10:45,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:10:45,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:10:45,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:10:45,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:10:45,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:10:45,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:10:45,352 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:10:45,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:10:45,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:10:45,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:10:45,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:10:45,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:10:45,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:10:45,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:10:45,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:10:45,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:10:45,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:10:45,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:10:45,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:10:45,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:10:45,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:10:45,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:10:45,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:10:45,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:10:45,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:10:45,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:10:45,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:10:45,895 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:10:45,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_14-2.c [2020-09-25 11:10:45,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/addb2e871/e95d27a9a422422ea6b71567c577b292/FLAG9a61baf95 [2020-09-25 11:10:46,556 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:10:46,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_14-2.c [2020-09-25 11:10:46,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/addb2e871/e95d27a9a422422ea6b71567c577b292/FLAG9a61baf95 [2020-09-25 11:10:46,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/addb2e871/e95d27a9a422422ea6b71567c577b292 [2020-09-25 11:10:46,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:10:46,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:10:46,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:46,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:10:46,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:10:46,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:46" (1/1) ... [2020-09-25 11:10:46,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:46, skipping insertion in model container [2020-09-25 11:10:46,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:46" (1/1) ... [2020-09-25 11:10:46,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:10:46,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:10:47,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:47,223 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:10:47,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:47,283 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:10:47,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:47 WrapperNode [2020-09-25 11:10:47,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:47,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:10:47,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:10:47,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:10:47,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:47" (1/1) ... [2020-09-25 11:10:47,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:47" (1/1) ... [2020-09-25 11:10:47,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:47" (1/1) ... [2020-09-25 11:10:47,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:47" (1/1) ... [2020-09-25 11:10:47,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:47" (1/1) ... [2020-09-25 11:10:47,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:47" (1/1) ... [2020-09-25 11:10:47,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:47" (1/1) ... [2020-09-25 11:10:47,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:10:47,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:10:47,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:10:47,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:10:47,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:47" (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 11:10:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:10:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:10:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:10:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:10:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:10:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:10:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:10:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:10:48,073 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:10:48,073 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:10:48,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:48 BoogieIcfgContainer [2020-09-25 11:10:48,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:10:48,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:10:48,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:10:48,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:10:48,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:10:46" (1/3) ... [2020-09-25 11:10:48,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3713c85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:48, skipping insertion in model container [2020-09-25 11:10:48,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:47" (2/3) ... [2020-09-25 11:10:48,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3713c85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:48, skipping insertion in model container [2020-09-25 11:10:48,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:48" (3/3) ... [2020-09-25 11:10:48,091 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2020-09-25 11:10:48,102 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:10:48,113 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:10:48,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:10:48,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:10:48,164 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:10:48,164 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:10:48,164 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:10:48,164 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:10:48,165 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:10:48,165 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:10:48,165 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:10:48,189 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-09-25 11:10:48,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-25 11:10:48,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:48,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:10:48,202 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:48,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:48,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1065527792, now seen corresponding path program 1 times [2020-09-25 11:10:48,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:48,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003177074] [2020-09-25 11:10:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:10:48,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 11:10:48,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 11:10:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:10:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:10:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:48,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:10:48,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:48,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003177074] [2020-09-25 11:10:48,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:48,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:48,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866727504] [2020-09-25 11:10:48,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:48,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:48,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:48,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:48,891 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2020-09-25 11:10:49,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:49,007 INFO L93 Difference]: Finished difference Result 345 states and 477 transitions. [2020-09-25 11:10:49,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:49,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-09-25 11:10:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:49,033 INFO L225 Difference]: With dead ends: 345 [2020-09-25 11:10:49,033 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 11:10:49,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:49,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 11:10:49,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2020-09-25 11:10:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-25 11:10:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 318 transitions. [2020-09-25 11:10:49,169 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 318 transitions. Word has length 97 [2020-09-25 11:10:49,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:49,170 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 318 transitions. [2020-09-25 11:10:49,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:49,170 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 318 transitions. [2020-09-25 11:10:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-25 11:10:49,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:49,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:10:49,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:10:49,176 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:49,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:49,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1065536007, now seen corresponding path program 1 times [2020-09-25 11:10:49,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:49,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455849041] [2020-09-25 11:10:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:10:49,209 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:10:49,209 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:10:49,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:10:49,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:10:49 BoogieIcfgContainer [2020-09-25 11:10:49,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:10:49,248 INFO L168 Benchmark]: Toolchain (without parser) took 2349.36 ms. Allocated memory was 148.4 MB in the beginning and 233.3 MB in the end (delta: 84.9 MB). Free memory was 103.7 MB in the beginning and 195.7 MB in the end (delta: -92.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:10:49,249 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:10:49,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.76 ms. Allocated memory is still 148.4 MB. Free memory was 103.0 MB in the beginning and 91.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:49,251 INFO L168 Benchmark]: Boogie Preprocessor took 152.27 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 91.7 MB in the beginning and 181.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:49,252 INFO L168 Benchmark]: RCFGBuilder took 642.56 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 150.9 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:49,253 INFO L168 Benchmark]: TraceAbstraction took 1162.40 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 150.3 MB in the beginning and 195.7 MB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:10:49,258 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 383.76 ms. Allocated memory is still 148.4 MB. Free memory was 103.0 MB in the beginning and 91.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.27 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 91.7 MB in the beginning and 181.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 642.56 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 150.9 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1162.40 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 150.3 MB in the beginning and 195.7 MB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 217]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] int p1 = __VERIFIER_nondet_int(); [L7] int lk1; [L9] int p2 = __VERIFIER_nondet_int(); [L10] int lk2; [L12] int p3 = __VERIFIER_nondet_int(); [L13] int lk3; [L15] int p4 = __VERIFIER_nondet_int(); [L16] int lk4; [L18] int p5 = __VERIFIER_nondet_int(); [L19] int lk5; [L21] int p6 = __VERIFIER_nondet_int(); [L22] int lk6; [L24] int p7 = __VERIFIER_nondet_int(); [L25] int lk7; [L27] int p8 = __VERIFIER_nondet_int(); [L28] int lk8; [L30] int p9 = __VERIFIER_nondet_int(); [L31] int lk9; [L33] int p10 = __VERIFIER_nondet_int(); [L34] int lk10; [L36] int p11 = __VERIFIER_nondet_int(); [L37] int lk11; [L39] int p12 = __VERIFIER_nondet_int(); [L40] int lk12; [L42] int p13 = __VERIFIER_nondet_int(); [L43] int lk13; [L45] int p14 = __VERIFIER_nondet_int(); [L46] int lk14; [L49] int cond; [L51] COND TRUE 1 [L52] cond = __VERIFIER_nondet_int() [L53] COND FALSE !(cond == 0) [L56] lk1 = 0 [L58] lk2 = 0 [L60] lk3 = 0 [L62] lk4 = 0 [L64] lk5 = 0 [L66] lk6 = 0 [L68] lk7 = 0 [L70] lk8 = 0 [L72] lk9 = 0 [L74] lk10 = 0 [L76] lk11 = 0 [L78] lk12 = 0 [L80] lk13 = 0 [L82] lk14 = 0 [L86] COND FALSE !(p1 != 0) [L90] COND FALSE !(p2 != 0) [L94] COND FALSE !(p3 != 0) [L98] COND FALSE !(p4 != 0) [L102] COND FALSE !(p5 != 0) [L106] COND FALSE !(p6 != 0) [L110] COND FALSE !(p7 != 0) [L114] COND FALSE !(p8 != 0) [L118] COND FALSE !(p9 != 0) [L122] COND FALSE !(p10 != 0) [L126] COND FALSE !(p11 != 0) [L130] COND FALSE !(p12 != 0) [L134] COND FALSE !(p13 != 0) [L138] COND FALSE !(p14 != 0) [L144] COND FALSE !(p1 != 0) [L149] COND FALSE !(p2 != 0) [L217] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 158 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 220 SDtfs, 115 SDslu, 194 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 11904 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 incorrect! Received shutdown request...