/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_14-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:58:22,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:58:22,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:58:22,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:58:22,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:58:22,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:58:22,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:58:22,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:58:22,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:58:22,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:58:22,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:58:22,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:58:22,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:58:22,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:58:22,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:58:22,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:58:22,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:58:22,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:58:22,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:58:22,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:58:22,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:58:22,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:58:22,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:58:22,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:58:22,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:58:22,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:58:22,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:58:22,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:58:22,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:58:22,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:58:22,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:58:22,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:58:22,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:58:22,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:58:22,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:58:22,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:58:22,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:58:22,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:58:22,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:58:22,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:58:22,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:58:22,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:58:22,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:58:22,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:58:22,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:58:22,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:58:22,347 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:58:22,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:58:22,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:58:22,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:58:22,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:58:22,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:58:22,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:58:22,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:58:22,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:58:22,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:58:22,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:58:22,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:58:22,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:58:22,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:58:22,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:58:22,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:58:22,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:58:22,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:58:22,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:58:22,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:58:22,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:58:22,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:58:22,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:58:22,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:58:22,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:58:22,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:58:22,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:58:22,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:58:22,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:58:22,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:58:22,644 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:58:22,645 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_14-2.c [2020-10-12 15:58:22,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e87f626bb/ef3fdd5a753244b5b84027adad11a5a5/FLAGbb4f16e28 [2020-10-12 15:58:23,168 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:58:23,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_14-2.c [2020-10-12 15:58:23,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e87f626bb/ef3fdd5a753244b5b84027adad11a5a5/FLAGbb4f16e28 [2020-10-12 15:58:23,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e87f626bb/ef3fdd5a753244b5b84027adad11a5a5 [2020-10-12 15:58:23,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:58:23,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:58:23,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:58:23,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:58:23,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:58:23,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:58:23" (1/1) ... [2020-10-12 15:58:23,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634f0049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:23, skipping insertion in model container [2020-10-12 15:58:23,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:58:23" (1/1) ... [2020-10-12 15:58:23,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:58:23,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:58:23,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:58:23,799 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:58:23,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:58:23,843 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:58:23,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:23 WrapperNode [2020-10-12 15:58:23,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:58:23,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:58:23,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:58:23,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:58:23,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:23" (1/1) ... [2020-10-12 15:58:23,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:23" (1/1) ... [2020-10-12 15:58:23,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:23" (1/1) ... [2020-10-12 15:58:23,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:23" (1/1) ... [2020-10-12 15:58:23,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:23" (1/1) ... [2020-10-12 15:58:23,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:23" (1/1) ... [2020-10-12 15:58:23,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:23" (1/1) ... [2020-10-12 15:58:23,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:58:23,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:58:23,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:58:23,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:58:23,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:58:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:58:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:58:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:58:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:58:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:58:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:58:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:58:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:58:24,377 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:58:24,377 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:58:24,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:58:24 BoogieIcfgContainer [2020-10-12 15:58:24,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:58:24,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:58:24,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:58:24,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:58:24,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:58:23" (1/3) ... [2020-10-12 15:58:24,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5488213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:58:24, skipping insertion in model container [2020-10-12 15:58:24,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:23" (2/3) ... [2020-10-12 15:58:24,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5488213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:58:24, skipping insertion in model container [2020-10-12 15:58:24,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:58:24" (3/3) ... [2020-10-12 15:58:24,389 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2020-10-12 15:58:24,399 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:58:24,406 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:58:24,419 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:58:24,442 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:58:24,442 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:58:24,442 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:58:24,442 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:58:24,442 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:58:24,443 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:58:24,443 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:58:24,443 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:58:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-12 15:58:24,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:58:24,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:24,466 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] [2020-10-12 15:58:24,466 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:24,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:24,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1694527455, now seen corresponding path program 1 times [2020-10-12 15:58:24,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:24,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314901549] [2020-10-12 15:58:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:24,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:24,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:58:24,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:24,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-12 15:58:24,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:58:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:24,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 15:58:25,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:25,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:25,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:25,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:25,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:25,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:25,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:58:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:58:25,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314901549] [2020-10-12 15:58:25,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:25,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:25,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150124665] [2020-10-12 15:58:25,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:25,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:25,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:25,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:25,099 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-10-12 15:58:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:25,204 INFO L93 Difference]: Finished difference Result 131 states and 239 transitions. [2020-10-12 15:58:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:25,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-12 15:58:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:25,218 INFO L225 Difference]: With dead ends: 131 [2020-10-12 15:58:25,218 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 15:58:25,222 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 [2020-10-12 15:58:25,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 15:58:25,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-12 15:58:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-12 15:58:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 126 transitions. [2020-10-12 15:58:25,266 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 126 transitions. Word has length 24 [2020-10-12 15:58:25,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:25,267 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 126 transitions. [2020-10-12 15:58:25,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 126 transitions. [2020-10-12 15:58:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:58:25,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:25,268 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] [2020-10-12 15:58:25,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:58:25,269 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:25,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1694520263, now seen corresponding path program 1 times [2020-10-12 15:58:25,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:25,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206532425] [2020-10-12 15:58:25,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:25,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:25,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:58:25,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:25,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 15:58:25,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:25,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:25,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:25,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:25,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:25,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:25,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:25,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:25,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:25,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:25,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:25,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:58:25,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206532425] [2020-10-12 15:58:25,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:25,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:25,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272744631] [2020-10-12 15:58:25,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:25,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:25,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:25,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:25,447 INFO L87 Difference]: Start difference. First operand 70 states and 126 transitions. Second operand 3 states. [2020-10-12 15:58:25,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:25,497 INFO L93 Difference]: Finished difference Result 133 states and 242 transitions. [2020-10-12 15:58:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:25,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-12 15:58:25,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:25,500 INFO L225 Difference]: With dead ends: 133 [2020-10-12 15:58:25,500 INFO L226 Difference]: Without dead ends: 131 [2020-10-12 15:58:25,502 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 [2020-10-12 15:58:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-12 15:58:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 100. [2020-10-12 15:58:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 15:58:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 183 transitions. [2020-10-12 15:58:25,515 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 183 transitions. Word has length 24 [2020-10-12 15:58:25,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:25,516 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 183 transitions. [2020-10-12 15:58:25,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:25,516 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 183 transitions. [2020-10-12 15:58:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:58:25,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:25,518 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] [2020-10-12 15:58:25,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:58:25,518 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:25,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:25,519 INFO L82 PathProgramCache]: Analyzing trace with hash 673459101, now seen corresponding path program 1 times [2020-10-12 15:58:25,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:25,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722083402] [2020-10-12 15:58:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:25,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:25,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:25,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:58:25,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 15:58:25,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:25,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:25,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:25,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:25,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:25,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:25,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:58:25,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722083402] [2020-10-12 15:58:25,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:25,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:25,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665614697] [2020-10-12 15:58:25,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:25,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:25,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:25,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:25,601 INFO L87 Difference]: Start difference. First operand 100 states and 183 transitions. Second operand 3 states. [2020-10-12 15:58:25,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:25,624 INFO L93 Difference]: Finished difference Result 194 states and 356 transitions. [2020-10-12 15:58:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:25,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-12 15:58:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:25,626 INFO L225 Difference]: With dead ends: 194 [2020-10-12 15:58:25,627 INFO L226 Difference]: Without dead ends: 132 [2020-10-12 15:58:25,628 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 [2020-10-12 15:58:25,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-12 15:58:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-12 15:58:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-12 15:58:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 237 transitions. [2020-10-12 15:58:25,643 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 237 transitions. Word has length 24 [2020-10-12 15:58:25,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:25,643 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 237 transitions. [2020-10-12 15:58:25,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:25,643 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 237 transitions. [2020-10-12 15:58:25,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:58:25,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:25,645 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] [2020-10-12 15:58:25,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:58:25,645 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:25,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:25,646 INFO L82 PathProgramCache]: Analyzing trace with hash 106172361, now seen corresponding path program 1 times [2020-10-12 15:58:25,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:25,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688032191] [2020-10-12 15:58:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:25,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:25,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:25,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:58:25,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:25,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 15:58:25,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:25,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:25,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:25,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:25,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:25,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:25,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:25,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:25,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:58:25,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688032191] [2020-10-12 15:58:25,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:25,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:25,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806391362] [2020-10-12 15:58:25,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:25,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:25,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:25,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:25,724 INFO L87 Difference]: Start difference. First operand 130 states and 237 transitions. Second operand 3 states. [2020-10-12 15:58:25,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:25,742 INFO L93 Difference]: Finished difference Result 179 states and 322 transitions. [2020-10-12 15:58:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:25,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-12 15:58:25,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:25,744 INFO L225 Difference]: With dead ends: 179 [2020-10-12 15:58:25,745 INFO L226 Difference]: Without dead ends: 130 [2020-10-12 15:58:25,745 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 [2020-10-12 15:58:25,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-12 15:58:25,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-12 15:58:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-12 15:58:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 230 transitions. [2020-10-12 15:58:25,757 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 230 transitions. Word has length 24 [2020-10-12 15:58:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:25,758 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 230 transitions. [2020-10-12 15:58:25,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 230 transitions. [2020-10-12 15:58:25,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:58:25,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:25,759 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] [2020-10-12 15:58:25,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:58:25,760 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:25,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:25,760 INFO L82 PathProgramCache]: Analyzing trace with hash -914888801, now seen corresponding path program 1 times [2020-10-12 15:58:25,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:25,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887415591] [2020-10-12 15:58:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:58:25,773 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:58:25,773 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:58:25,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:58:25,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:58:25 BoogieIcfgContainer [2020-10-12 15:58:25,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:58:25,798 INFO L168 Benchmark]: Toolchain (without parser) took 2239.74 ms. Allocated memory was 140.5 MB in the beginning and 233.8 MB in the end (delta: 93.3 MB). Free memory was 102.7 MB in the beginning and 152.2 MB in the end (delta: -49.5 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:58:25,799 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:58:25,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.18 ms. Allocated memory is still 140.5 MB. Free memory was 102.4 MB in the beginning and 91.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:58:25,801 INFO L168 Benchmark]: Boogie Preprocessor took 119.00 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 180.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:58:25,801 INFO L168 Benchmark]: RCFGBuilder took 417.95 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 157.0 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:58:25,802 INFO L168 Benchmark]: TraceAbstraction took 1412.57 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 157.0 MB in the beginning and 152.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:58:25,806 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.18 ms. Allocated memory is still 140.5 MB. Free memory was 102.4 MB in the beginning and 91.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.00 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 180.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 417.95 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 157.0 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1412.57 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 157.0 MB in the beginning and 152.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 35.7 MB. 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 TRUE p3 != 0 [L95] lk3 = 1 [L98] COND TRUE p4 != 0 [L99] lk4 = 1 [L102] COND TRUE p5 != 0 [L103] lk5 = 1 [L106] COND TRUE p6 != 0 [L107] lk6 = 1 [L110] COND TRUE p7 != 0 [L111] lk7 = 1 [L114] COND FALSE !(p8 != 0) [L118] COND TRUE p9 != 0 [L119] lk9 = 1 [L122] COND TRUE p10 != 0 [L123] lk10 = 1 [L126] COND TRUE p11 != 0 [L127] lk11 = 1 [L130] COND TRUE p12 != 0 [L131] lk12 = 1 [L134] COND TRUE p13 != 0 [L135] lk13 = 1 [L138] COND TRUE p14 != 0 [L139] lk14 = 1 [L144] COND FALSE !(p1 != 0) [L149] COND FALSE !(p2 != 0) [L217] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 460 SDtfs, 282 SDslu, 301 SDs, 0 SdLazy, 21 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred 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, 4 MinimizatonAttempts, 37 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 5382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...