/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/s2iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:55:01,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:55:01,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:55:01,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:55:01,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:55:01,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:55:01,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:55:01,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:55:01,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:55:01,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:55:01,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:55:01,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:55:01,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:55:01,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:55:01,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:55:01,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:55:01,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:55:01,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:55:01,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:55:01,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:55:01,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:55:01,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:55:01,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:55:01,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:55:01,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:55:01,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:55:01,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:55:01,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:55:01,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:55:01,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:55:01,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:55:01,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:55:01,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:55:01,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:55:01,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:55:01,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:55:01,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:55:01,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:55:01,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:55:01,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:55:01,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:55:01,394 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 22:55:01,424 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:55:01,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:55:01,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:55:01,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:55:01,427 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:55:01,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:55:01,427 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:55:01,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:55:01,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:55:01,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:55:01,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:55:01,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:55:01,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:55:01,429 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:55:01,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:55:01,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:55:01,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:55:01,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:55:01,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:55:01,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:55:01,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:55:01,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:55:01,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:55:01,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:55:01,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:55:01,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:55:01,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:55:01,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:55:01,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:55:01,432 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 22:55:01,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:55:01,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:55:01,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:55:01,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:55:01,984 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:55:01,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2iff.c [2020-09-24 22:55:02,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d8e2a788/501b52f108cd4934b6010addabfaf607/FLAGc0ff0bcf6 [2020-09-24 22:55:02,656 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:55:02,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s2iff.c [2020-09-24 22:55:02,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d8e2a788/501b52f108cd4934b6010addabfaf607/FLAGc0ff0bcf6 [2020-09-24 22:55:02,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d8e2a788/501b52f108cd4934b6010addabfaf607 [2020-09-24 22:55:02,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:55:02,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:55:02,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:02,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:55:03,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:55:03,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:02" (1/1) ... [2020-09-24 22:55:03,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629af9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03, skipping insertion in model container [2020-09-24 22:55:03,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:02" (1/1) ... [2020-09-24 22:55:03,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:55:03,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:55:03,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:03,326 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:55:03,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:03,381 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:55:03,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03 WrapperNode [2020-09-24 22:55:03,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:03,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:55:03,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:55:03,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:55:03,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:55:03,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:55:03,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:55:03,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:55:03,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (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 22:55:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:55:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:55:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:55:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:55:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:55:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:55:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:55:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:55:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:55:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:55:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:55:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:55:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:55:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:55:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:55:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:55:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:55:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:55:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:55:04,044 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:55:04,044 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 22:55:04,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:04 BoogieIcfgContainer [2020-09-24 22:55:04,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:55:04,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:55:04,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:55:04,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:55:04,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:55:02" (1/3) ... [2020-09-24 22:55:04,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c17b8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:04, skipping insertion in model container [2020-09-24 22:55:04,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (2/3) ... [2020-09-24 22:55:04,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c17b8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:04, skipping insertion in model container [2020-09-24 22:55:04,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:04" (3/3) ... [2020-09-24 22:55:04,061 INFO L109 eAbstractionObserver]: Analyzing ICFG s2iff.c [2020-09-24 22:55:04,073 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:55:04,083 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:55:04,105 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:55:04,138 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:55:04,139 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:55:04,139 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:55:04,139 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:55:04,139 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:55:04,139 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:55:04,140 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:55:04,140 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:55:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 22:55:04,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:55:04,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:04,174 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] [2020-09-24 22:55:04,174 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:04,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:04,181 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-24 22:55:04,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:04,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011486579] [2020-09-24 22:55:04,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:04,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:04,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 22:55:04,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:55:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 22:55:04,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 22:55:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:04,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 22:55:04,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:04,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:55:04,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:04,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:55:04,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:55:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:04,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:55:04,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:04,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:55:04,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:04,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:04,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:04,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:04,764 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 22:55:04,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011486579] [2020-09-24 22:55:04,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:04,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:55:04,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020794763] [2020-09-24 22:55:04,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:55:04,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:04,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:55:04,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:55:04,800 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-24 22:55:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:04,982 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-24 22:55:04,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:55:04,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-24 22:55:04,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:04,999 INFO L225 Difference]: With dead ends: 113 [2020-09-24 22:55:05,000 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 22:55:05,005 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 22:55:05,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 22:55:05,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 22:55:05,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 22:55:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 22:55:05,069 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-24 22:55:05,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:05,069 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 22:55:05,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:55:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 22:55:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:55:05,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:05,072 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] [2020-09-24 22:55:05,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:55:05,072 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:05,073 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-24 22:55:05,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:05,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997285306] [2020-09-24 22:55:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:05,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 22:55:05,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:55:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-09-24 22:55:05,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:55:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:55:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:55:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:05,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:05,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:55:05,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:05,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:55:05,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:05,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:05,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:55:05,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:55:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:05,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:55:05,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:05,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:55:05,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:55:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:55:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:05,676 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 22:55:05,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997285306] [2020-09-24 22:55:05,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:05,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:55:05,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282240530] [2020-09-24 22:55:05,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:55:05,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:05,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:55:05,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:55:05,685 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-24 22:55:05,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:05,896 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-24 22:55:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:55:05,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 22:55:05,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:05,898 INFO L225 Difference]: With dead ends: 80 [2020-09-24 22:55:05,899 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 22:55:05,901 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 22:55:05,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 22:55:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 22:55:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 22:55:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-24 22:55:05,912 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-24 22:55:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:05,913 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-24 22:55:05,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:55:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-24 22:55:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 22:55:05,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:05,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:05,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:55:05,916 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:05,916 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-24 22:55:05,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:05,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840130326] [2020-09-24 22:55:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:05,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:06,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:07,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:08,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:08,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:10,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:10,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:55:10,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:55:10,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 22:55:10,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 22:55:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 22:55:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:55:10,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:11,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:11,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:11,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:55:11,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:11,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:55:11,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:11,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:11,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:55:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:11,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:11,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:55:11,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:11,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:55:11,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:11,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:11,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840130326] [2020-09-24 22:55:11,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:11,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 22:55:11,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715839872] [2020-09-24 22:55:11,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 22:55:11,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:11,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 22:55:11,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:55:11,499 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 21 states. [2020-09-24 22:55:12,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:12,922 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2020-09-24 22:55:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 22:55:12,925 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 48 [2020-09-24 22:55:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:12,927 INFO L225 Difference]: With dead ends: 84 [2020-09-24 22:55:12,927 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 22:55:12,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=308, Invalid=1332, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 22:55:12,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 22:55:12,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2020-09-24 22:55:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 22:55:12,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-24 22:55:12,943 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 48 [2020-09-24 22:55:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:12,943 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-24 22:55:12,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 22:55:12,944 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-24 22:55:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 22:55:12,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:12,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:12,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:55:12,946 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:12,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:12,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-24 22:55:12,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:12,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544058275] [2020-09-24 22:55:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:12,967 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 22:55:12,968 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 22:55:12,968 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:55:12,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:55:12,998 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 22:55:12,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:55:12 BoogieIcfgContainer [2020-09-24 22:55:12,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:55:13,003 INFO L168 Benchmark]: Toolchain (without parser) took 10012.99 ms. Allocated memory was 138.9 MB in the beginning and 283.6 MB in the end (delta: 144.7 MB). Free memory was 102.0 MB in the beginning and 138.2 MB in the end (delta: -36.2 MB). Peak memory consumption was 108.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:13,004 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:55:13,005 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.87 ms. Allocated memory is still 138.9 MB. Free memory was 101.3 MB in the beginning and 91.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:13,006 INFO L168 Benchmark]: Boogie Preprocessor took 147.30 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 179.1 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:13,007 INFO L168 Benchmark]: RCFGBuilder took 516.87 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 159.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:13,008 INFO L168 Benchmark]: TraceAbstraction took 8946.76 ms. Allocated memory was 201.9 MB in the beginning and 283.6 MB in the end (delta: 81.8 MB). Free memory was 159.3 MB in the beginning and 138.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 102.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:13,012 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 387.87 ms. Allocated memory is still 138.9 MB. Free memory was 101.3 MB in the beginning and 91.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.30 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 179.1 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 516.87 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 159.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8946.76 ms. Allocated memory was 201.9 MB in the beginning and 283.6 MB in the end (delta: 81.8 MB). Free memory was 159.3 MB in the beginning and 138.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 102.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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] sum[0] = 1 [L30] i=0 [L30] COND TRUE i