/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:54:30,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:54:30,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:54:30,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:54:30,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:54:30,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:54:30,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:54:30,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:54:30,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:54:30,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:54:30,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:54:30,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:54:30,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:54:30,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:54:30,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:54:30,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:54:30,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:54:30,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:54:30,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:54:30,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:54:30,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:54:30,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:54:30,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:54:30,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:54:30,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:54:30,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:54:30,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:54:30,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:54:30,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:54:30,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:54:30,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:54:30,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:54:30,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:54:30,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:54:30,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:54:30,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:54:30,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:54:30,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:54:30,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:54:30,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:54:30,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:54:30,438 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 [2020-09-24 22:54:30,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:54:30,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:54:30,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:54:30,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:54:30,466 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:54:30,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:54:30,467 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:54:30,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:54:30,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:54:30,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:54:30,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:54:30,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:54:30,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:54:30,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:54:30,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:54:30,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:54:30,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:54:30,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:54:30,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:54:30,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:54:30,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:54:30,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:54:30,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:54:30,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:54:30,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:54:30,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:54:30,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:54:30,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:54:30,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:54:30,472 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:54:30,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:54:30,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:54:30,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:54:30,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:54:30,978 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:54:30,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-24 22:54:31,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/165790d57/30c4420023f245f594b4c4391815e1c4/FLAG6d5893e18 [2020-09-24 22:54:31,576 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:54:31,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-24 22:54:31,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/165790d57/30c4420023f245f594b4c4391815e1c4/FLAG6d5893e18 [2020-09-24 22:54:31,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/165790d57/30c4420023f245f594b4c4391815e1c4 [2020-09-24 22:54:31,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:54:31,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:54:31,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:31,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:54:31,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:54:31,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:31" (1/1) ... [2020-09-24 22:54:31,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76be6b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:31, skipping insertion in model container [2020-09-24 22:54:31,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:31" (1/1) ... [2020-09-24 22:54:31,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:54:31,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:54:32,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:32,212 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:54:32,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:32,250 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:54:32,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32 WrapperNode [2020-09-24 22:54:32,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:32,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:54:32,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:54:32,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:54:32,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:54:32,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:54:32,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:54:32,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:54:32,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (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 [2020-09-24 22:54:32,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:54:32,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:54:32,475 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:54:32,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:54:32,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:54:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:54:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:54:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:54:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:54:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:54:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:54:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:54:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:54:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:54:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:54:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:54:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:54:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:54:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:54:32,835 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:54:32,836 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 22:54:32,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:32 BoogieIcfgContainer [2020-09-24 22:54:32,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:54:32,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:54:32,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:54:32,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:54:32,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:54:31" (1/3) ... [2020-09-24 22:54:32,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c790496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:32, skipping insertion in model container [2020-09-24 22:54:32,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (2/3) ... [2020-09-24 22:54:32,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c790496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:32, skipping insertion in model container [2020-09-24 22:54:32,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:32" (3/3) ... [2020-09-24 22:54:32,851 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-09-24 22:54:32,862 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:54:32,872 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:54:32,891 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:54:32,917 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:54:32,917 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:54:32,917 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:54:32,917 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:54:32,917 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:54:32,917 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:54:32,917 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:54:32,918 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:54:32,939 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 22:54:32,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 22:54:32,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:32,948 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] [2020-09-24 22:54:32,948 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:32,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:32,954 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-24 22:54:32,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:32,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338304884] [2020-09-24 22:54:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:33,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:33,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:33,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 22:54:33,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:33,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-09-24 22:54:33,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:33,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:33,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 22:54:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:54:33,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:33,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:33,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:33,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:33,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:54:33,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:33,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:33,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:33,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:33,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:33,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:33,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:54:33,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:33,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:33,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338304884] [2020-09-24 22:54:33,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:33,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:54:33,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183819016] [2020-09-24 22:54:33,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:54:33,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:33,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:54:33,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:54:33,671 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-24 22:54:33,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:33,849 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-09-24 22:54:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:54:33,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-24 22:54:33,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:33,862 INFO L225 Difference]: With dead ends: 101 [2020-09-24 22:54:33,863 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 22:54:33,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:54:33,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 22:54:33,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-24 22:54:33,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 22:54:33,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-24 22:54:33,920 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-24 22:54:33,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:33,921 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-24 22:54:33,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:54:33,921 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-24 22:54:33,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 22:54:33,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:33,923 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] [2020-09-24 22:54:33,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:54:33,923 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:33,924 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-24 22:54:33,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:33,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770883978] [2020-09-24 22:54:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:33,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:33,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:34,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 22:54:34,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:34,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-24 22:54:34,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:34,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:54:34,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:54:34,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 22:54:34,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:54:34,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:34,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:34,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:34,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:34,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:54:34,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:34,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:34,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:34,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:34,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:34,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:34,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:34,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:34,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:34,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:54:34,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:54:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:54:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:34,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770883978] [2020-09-24 22:54:34,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:34,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:54:34,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875025724] [2020-09-24 22:54:34,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:54:34,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:34,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:54:34,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:54:34,449 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-09-24 22:54:34,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:34,594 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-09-24 22:54:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:54:34,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 22:54:34,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:34,596 INFO L225 Difference]: With dead ends: 67 [2020-09-24 22:54:34,596 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 22:54:34,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:54:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 22:54:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 22:54:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 22:54:34,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-24 22:54:34,608 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-24 22:54:34,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:34,609 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-24 22:54:34,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:54:34,609 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-24 22:54:34,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 22:54:34,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:34,611 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] [2020-09-24 22:54:34,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:54:34,611 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:34,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:34,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-24 22:54:34,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:34,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038569072] [2020-09-24 22:54:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:34,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:35,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:36,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:36,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 22:54:36,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:54:36,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2168 [2020-09-24 22:54:36,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:36,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:54:36,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 22:54:36,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 22:54:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:36,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:36,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:36,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:36,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:36,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:54:36,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:36,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:36,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:36,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:36,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:36,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:36,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:54:36,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:54:36,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038569072] [2020-09-24 22:54:36,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:36,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:54:36,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505976599] [2020-09-24 22:54:36,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:54:36,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:36,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:54:36,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:54:36,970 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 9 states. [2020-09-24 22:54:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:37,297 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-24 22:54:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:54:37,298 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-24 22:54:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:37,299 INFO L225 Difference]: With dead ends: 64 [2020-09-24 22:54:37,300 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 22:54:37,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:54:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 22:54:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 22:54:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:54:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-24 22:54:37,309 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 42 [2020-09-24 22:54:37,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:37,310 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-24 22:54:37,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:54:37,310 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-24 22:54:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 22:54:37,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:37,312 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] [2020-09-24 22:54:37,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:54:37,312 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1495951507, now seen corresponding path program 1 times [2020-09-24 22:54:37,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:37,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109591007] [2020-09-24 22:54:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:37,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:38,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 22:54:38,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:54:38,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-09-24 22:54:38,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:54:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 22:54:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 22:54:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:54:38,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:38,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:38,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:38,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:54:38,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:54:38,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:38,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:38,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:54:38,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:54:38,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109591007] [2020-09-24 22:54:38,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:38,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:54:38,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635300660] [2020-09-24 22:54:38,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:54:38,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:38,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:54:38,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:54:38,262 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2020-09-24 22:54:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:38,399 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-24 22:54:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:54:38,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 22:54:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:38,401 INFO L225 Difference]: With dead ends: 87 [2020-09-24 22:54:38,401 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 22:54:38,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:54:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 22:54:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-24 22:54:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 22:54:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-24 22:54:38,418 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 46 [2020-09-24 22:54:38,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:38,418 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-24 22:54:38,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:54:38,418 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-24 22:54:38,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:54:38,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:38,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:38,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:54:38,424 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:38,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:38,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times [2020-09-24 22:54:38,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:38,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815554656] [2020-09-24 22:54:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:40,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:42,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:42,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 22:54:42,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:54:42,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4505 [2020-09-24 22:54:42,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:54:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 22:54:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 22:54:42,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:43,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:43,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:43,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:43,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:43,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:43,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:54:43,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:43,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:43,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:43,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:43,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:43,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:54:43,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:43,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:43,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:43,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:43,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815554656] [2020-09-24 22:54:43,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:54:43,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:54:43,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547876096] [2020-09-24 22:54:43,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:54:43,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:43,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:54:43,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:54:43,182 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 13 states. [2020-09-24 22:54:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:43,912 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-09-24 22:54:43,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:54:43,912 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-24 22:54:43,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:43,914 INFO L225 Difference]: With dead ends: 114 [2020-09-24 22:54:43,914 INFO L226 Difference]: Without dead ends: 93 [2020-09-24 22:54:43,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-09-24 22:54:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-24 22:54:43,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2020-09-24 22:54:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 22:54:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2020-09-24 22:54:43,926 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 52 [2020-09-24 22:54:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:43,926 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2020-09-24 22:54:43,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:54:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2020-09-24 22:54:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:54:43,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:43,928 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:43,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:54:43,929 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:43,929 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-09-24 22:54:43,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:43,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145356651] [2020-09-24 22:54:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:43,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:44,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:44,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:44,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:45,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:46,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:46,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:48,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:48,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:54:48,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:54:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 22:54:48,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 22:54:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:54:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:54:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:49,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:49,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:49,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:49,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:54:49,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:49,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:49,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:49,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:49,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:49,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:54:49,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:49,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145356651] [2020-09-24 22:54:49,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:54:49,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 22:54:49,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059301787] [2020-09-24 22:54:49,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 22:54:49,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:49,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 22:54:49,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:54:49,600 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand 18 states. [2020-09-24 22:54:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:50,698 INFO L93 Difference]: Finished difference Result 198 states and 217 transitions. [2020-09-24 22:54:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 22:54:50,699 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-09-24 22:54:50,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:50,701 INFO L225 Difference]: With dead ends: 198 [2020-09-24 22:54:50,701 INFO L226 Difference]: Without dead ends: 131 [2020-09-24 22:54:50,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 22:54:50,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-24 22:54:50,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 118. [2020-09-24 22:54:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-24 22:54:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2020-09-24 22:54:50,714 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 58 [2020-09-24 22:54:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:50,714 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2020-09-24 22:54:50,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 22:54:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2020-09-24 22:54:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 22:54:50,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:50,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:50,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:54:50,717 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:50,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:50,717 INFO L82 PathProgramCache]: Analyzing trace with hash 460585291, now seen corresponding path program 2 times [2020-09-24 22:54:50,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:50,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176153043] [2020-09-24 22:54:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:50,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:50,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:50,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:51,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:51,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:52,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:52,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:53,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:55,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:55,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 22:54:55,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 22:54:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:54:55,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:54:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:54:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 22:54:55,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:55,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:55,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:55,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:55,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:55,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:54:55,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:55,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:55,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:55,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:55,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:55,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:55,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:54:55,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:55,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:55,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:55,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:55,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176153043] [2020-09-24 22:54:55,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:54:55,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:54:55,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093415409] [2020-09-24 22:54:55,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:54:55,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:55,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:54:55,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:54:55,887 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand 12 states. [2020-09-24 22:54:56,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:56,197 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-09-24 22:54:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:54:56,198 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-09-24 22:54:56,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:56,199 INFO L225 Difference]: With dead ends: 160 [2020-09-24 22:54:56,199 INFO L226 Difference]: Without dead ends: 121 [2020-09-24 22:54:56,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:54:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-24 22:54:56,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2020-09-24 22:54:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-24 22:54:56,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2020-09-24 22:54:56,211 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 62 [2020-09-24 22:54:56,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:56,211 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions. [2020-09-24 22:54:56,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:54:56,211 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions. [2020-09-24 22:54:56,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 22:54:56,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:56,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:56,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:54:56,213 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:56,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:56,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1245154100, now seen corresponding path program 2 times [2020-09-24 22:54:56,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:56,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536532458] [2020-09-24 22:54:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:56,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:56,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:56,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:57,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:57,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:58,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:58,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:01,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:01,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 22:55:01,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:55:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:55:01,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:55:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 22:55:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:55:01,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:01,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:01,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:01,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:55:01,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:01,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:55:01,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:01,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:01,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:55:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:01,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:01,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:01,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:55:01,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:01,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:55:01,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:01,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:01,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:01,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:55:01,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536532458] [2020-09-24 22:55:01,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:01,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 22:55:01,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204886047] [2020-09-24 22:55:01,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 22:55:01,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:01,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 22:55:01,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:55:01,729 INFO L87 Difference]: Start difference. First operand 118 states and 127 transitions. Second operand 15 states. [2020-09-24 22:55:02,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:02,882 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2020-09-24 22:55:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:55:02,887 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-09-24 22:55:02,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:02,890 INFO L225 Difference]: With dead ends: 155 [2020-09-24 22:55:02,896 INFO L226 Difference]: Without dead ends: 134 [2020-09-24 22:55:02,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2020-09-24 22:55:02,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-24 22:55:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 124. [2020-09-24 22:55:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-24 22:55:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2020-09-24 22:55:02,924 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 68 [2020-09-24 22:55:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:02,925 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2020-09-24 22:55:02,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 22:55:02,925 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2020-09-24 22:55:02,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 22:55:02,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:02,930 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:02,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:55:02,930 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:02,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:02,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1864607259, now seen corresponding path program 3 times [2020-09-24 22:55:02,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:02,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460416276] [2020-09-24 22:55:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:02,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:03,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:07,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:07,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 22:55:07,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:55:07,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:55:07,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:55:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:55:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:55:07,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:08,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:08,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:08,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:55:08,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:55:08,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:08,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:08,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:08,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:08,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:55:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:08,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:08,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:08,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:55:08,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:08,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:55:08,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:08,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:08,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:08,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460416276] [2020-09-24 22:55:08,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:08,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:55:08,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394596734] [2020-09-24 22:55:08,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:55:08,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:08,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:55:08,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:55:08,189 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 16 states. [2020-09-24 22:55:08,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:08,954 INFO L93 Difference]: Finished difference Result 253 states and 272 transitions. [2020-09-24 22:55:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 22:55:08,954 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-09-24 22:55:08,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:08,956 INFO L225 Difference]: With dead ends: 253 [2020-09-24 22:55:08,956 INFO L226 Difference]: Without dead ends: 247 [2020-09-24 22:55:08,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2020-09-24 22:55:08,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-09-24 22:55:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 164. [2020-09-24 22:55:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 22:55:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 176 transitions. [2020-09-24 22:55:08,968 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 176 transitions. Word has length 70 [2020-09-24 22:55:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:08,969 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 176 transitions. [2020-09-24 22:55:08,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:55:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 176 transitions. [2020-09-24 22:55:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 22:55:08,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:08,970 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:08,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:55:08,971 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:08,971 INFO L82 PathProgramCache]: Analyzing trace with hash 685477565, now seen corresponding path program 4 times [2020-09-24 22:55:08,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:08,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583568413] [2020-09-24 22:55:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:55:08,991 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:55:08,991 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:55:08,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:55:09,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:55:09 BoogieIcfgContainer [2020-09-24 22:55:09,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:55:09,022 INFO L168 Benchmark]: Toolchain (without parser) took 37083.77 ms. Allocated memory was 145.2 MB in the beginning and 430.4 MB in the end (delta: 285.2 MB). Free memory was 101.5 MB in the beginning and 145.9 MB in the end (delta: -44.4 MB). Peak memory consumption was 240.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:09,023 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 119.9 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 22:55:09,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.20 ms. Allocated memory is still 145.2 MB. Free memory was 100.8 MB in the beginning and 90.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:09,024 INFO L168 Benchmark]: Boogie Preprocessor took 145.16 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 90.5 MB in the beginning and 179.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:09,025 INFO L168 Benchmark]: RCFGBuilder took 444.19 ms. Allocated memory is still 201.9 MB. Free memory was 179.7 MB in the beginning and 160.6 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:09,026 INFO L168 Benchmark]: TraceAbstraction took 36176.48 ms. Allocated memory was 201.9 MB in the beginning and 430.4 MB in the end (delta: 228.6 MB). Free memory was 160.0 MB in the beginning and 145.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 242.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:09,029 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 145.2 MB. Free memory was 119.9 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.20 ms. Allocated memory is still 145.2 MB. Free memory was 100.8 MB in the beginning and 90.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.16 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 90.5 MB in the beginning and 179.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.19 ms. Allocated memory is still 201.9 MB. Free memory was 179.7 MB in the beginning and 160.6 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36176.48 ms. Allocated memory was 201.9 MB in the beginning and 430.4 MB in the end (delta: 228.6 MB). Free memory was 160.0 MB in the beginning and 145.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 242.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i