/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=LOWLEXORDER --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 21:49:26,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:49:26,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:49:26,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:49:26,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:49:26,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:49:26,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:49:26,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:49:26,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:49:26,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:49:26,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:49:26,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:49:26,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:49:26,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:49:26,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:49:26,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:49:26,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:49:26,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:49:26,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:49:26,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:49:26,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:49:26,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:49:26,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:49:26,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:49:26,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:49:26,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:49:26,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:49:26,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:49:26,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:49:26,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:49:26,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:49:26,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:49:26,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:49:26,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:49:26,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:49:26,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:49:26,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:49:26,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:49:26,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:49:26,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:49:26,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:49:26,582 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 21:49:26,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:49:26,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:49:26,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:49:26,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:49:26,620 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:49:26,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:49:26,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:49:26,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:49:26,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:49:26,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:49:26,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:49:26,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:49:26,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:49:26,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:49:26,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:49:26,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:49:26,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:49:26,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:49:26,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:49:26,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:49:26,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:49:26,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:49:26,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:49:26,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:49:26,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:49:26,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:49:26,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:49:26,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:49:26,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:49:26,627 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:49:27,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:49:27,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:49:27,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:49:27,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:49:27,110 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:49:27,111 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2iff.c [2020-09-24 21:49:27,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb9c3797c/cf29b7e5362d4aeba7af69326df24109/FLAGaac95affd [2020-09-24 21:49:27,700 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:49:27,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s2iff.c [2020-09-24 21:49:27,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb9c3797c/cf29b7e5362d4aeba7af69326df24109/FLAGaac95affd [2020-09-24 21:49:28,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb9c3797c/cf29b7e5362d4aeba7af69326df24109 [2020-09-24 21:49:28,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:49:28,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:49:28,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:49:28,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:49:28,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:49:28,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:49:28" (1/1) ... [2020-09-24 21:49:28,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:28, skipping insertion in model container [2020-09-24 21:49:28,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:49:28" (1/1) ... [2020-09-24 21:49:28,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:49:28,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:49:28,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:49:28,362 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:49:28,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:49:28,403 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:49:28,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:28 WrapperNode [2020-09-24 21:49:28,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:49:28,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:49:28,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:49:28,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:49:28,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:28" (1/1) ... [2020-09-24 21:49:28,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:28" (1/1) ... [2020-09-24 21:49:28,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:28" (1/1) ... [2020-09-24 21:49:28,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:28" (1/1) ... [2020-09-24 21:49:28,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:28" (1/1) ... [2020-09-24 21:49:28,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:28" (1/1) ... [2020-09-24 21:49:28,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:28" (1/1) ... [2020-09-24 21:49:28,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:49:28,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:49:28,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:49:28,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:49:28,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:28" (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 21:49:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:49:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:49:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:49:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:49:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:49:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:49:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:49:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:49:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:49:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:49:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:49:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:49:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:49:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:49:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:49:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:49:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:49:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:49:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:49:28,929 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:49:28,930 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 21:49:28,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:49:28 BoogieIcfgContainer [2020-09-24 21:49:28,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:49:28,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:49:28,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:49:28,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:49:28,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:49:28" (1/3) ... [2020-09-24 21:49:28,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1ca86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:49:28, skipping insertion in model container [2020-09-24 21:49:28,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:28" (2/3) ... [2020-09-24 21:49:28,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1ca86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:49:28, skipping insertion in model container [2020-09-24 21:49:28,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:49:28" (3/3) ... [2020-09-24 21:49:28,951 INFO L109 eAbstractionObserver]: Analyzing ICFG s2iff.c [2020-09-24 21:49:28,969 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:49:28,979 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:49:29,008 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:49:29,043 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:49:29,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:49:29,044 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:49:29,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:49:29,044 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:49:29,044 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:49:29,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:49:29,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:49:29,083 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 21:49:29,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 21:49:29,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:29,096 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 21:49:29,096 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:29,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:29,105 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-24 21:49:29,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:29,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781833294] [2020-09-24 21:49:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:29,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:29,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:29,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 21:49:29,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:49:29,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 21:49:29,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 21:49:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:29,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 21:49:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:29,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:29,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:49:29,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:29,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:49:29,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:29,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:49:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:29,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:29,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:29,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:49:29,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:49:29,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:29,682 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 21:49:29,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781833294] [2020-09-24 21:49:29,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:49:29,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 21:49:29,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223486461] [2020-09-24 21:49:29,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 21:49:29,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:29,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 21:49:29,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:49:29,717 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-24 21:49:29,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:29,929 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-24 21:49:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 21:49:29,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-24 21:49:29,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:29,948 INFO L225 Difference]: With dead ends: 113 [2020-09-24 21:49:29,949 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 21:49:29,954 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 21:49:29,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 21:49:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 21:49:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 21:49:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 21:49:30,017 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-24 21:49:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:30,018 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 21:49:30,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 21:49:30,018 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 21:49:30,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 21:49:30,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:30,020 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 21:49:30,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:49:30,021 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:30,021 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-24 21:49:30,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:30,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417028249] [2020-09-24 21:49:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:30,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:30,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 21:49:30,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:49:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-24 21:49:30,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:49:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:49:30,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:30,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:30,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:30,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:49:30,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:49:30,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:30,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:49:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:30,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:30,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:49:30,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:49:30,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:49:30,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:30,536 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 21:49:30,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417028249] [2020-09-24 21:49:30,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:49:30,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:49:30,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794267008] [2020-09-24 21:49:30,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:49:30,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:30,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:49:30,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:49:30,541 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-24 21:49:30,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:30,700 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-24 21:49:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:49:30,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 21:49:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:30,703 INFO L225 Difference]: With dead ends: 80 [2020-09-24 21:49:30,703 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 21:49:30,704 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 21:49:30,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 21:49:30,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 21:49:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 21:49:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-24 21:49:30,715 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-24 21:49:30,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:30,715 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-24 21:49:30,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:49:30,716 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-24 21:49:30,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 21:49:30,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:30,717 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 21:49:30,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:49:30,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:30,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:30,718 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-24 21:49:30,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:30,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404466554] [2020-09-24 21:49:30,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:30,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:32,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:32,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:33,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:33,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:35,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:35,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 21:49:35,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:49:35,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 21:49:35,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:49:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 21:49:35,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:36,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:36,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:36,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:36,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:49:36,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:36,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:49:36,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:36,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:36,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:36,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:36,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:49:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:36,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:36,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:49:36,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:36,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:49:36,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:49:36,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:36,394 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 21:49:36,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404466554] [2020-09-24 21:49:36,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:49:36,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 21:49:36,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064289443] [2020-09-24 21:49:36,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 21:49:36,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:36,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 21:49:36,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-09-24 21:49:36,400 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 20 states. [2020-09-24 21:49:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:37,771 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2020-09-24 21:49:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 21:49:37,772 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-09-24 21:49:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:37,773 INFO L225 Difference]: With dead ends: 90 [2020-09-24 21:49:37,774 INFO L226 Difference]: Without dead ends: 84 [2020-09-24 21:49:37,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=256, Invalid=1150, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 21:49:37,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-24 21:49:37,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2020-09-24 21:49:37,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 21:49:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-24 21:49:37,786 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 48 [2020-09-24 21:49:37,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:37,789 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-24 21:49:37,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 21:49:37,790 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-24 21:49:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 21:49:37,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:37,791 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 21:49:37,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:49:37,793 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-24 21:49:37,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:37,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388993653] [2020-09-24 21:49:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:37,810 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 21:49:37,810 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 21:49:37,810 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:49:37,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:49:37,838 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 21:49:37,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:49:37 BoogieIcfgContainer [2020-09-24 21:49:37,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:49:37,842 INFO L168 Benchmark]: Toolchain (without parser) took 9772.55 ms. Allocated memory was 138.9 MB in the beginning and 285.7 MB in the end (delta: 146.8 MB). Free memory was 101.8 MB in the beginning and 138.7 MB in the end (delta: -36.9 MB). Peak memory consumption was 109.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:37,843 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 21:49:37,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.74 ms. Allocated memory is still 138.9 MB. Free memory was 101.1 MB in the beginning and 90.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:37,845 INFO L168 Benchmark]: Boogie Preprocessor took 125.58 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.7 MB in the beginning and 178.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:37,846 INFO L168 Benchmark]: RCFGBuilder took 406.17 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 159.2 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:37,847 INFO L168 Benchmark]: TraceAbstraction took 8899.37 ms. Allocated memory was 201.3 MB in the beginning and 285.7 MB in the end (delta: 84.4 MB). Free memory was 158.6 MB in the beginning and 138.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 104.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:37,851 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.74 ms. Allocated memory is still 138.9 MB. Free memory was 101.1 MB in the beginning and 90.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.58 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.7 MB in the beginning and 178.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.17 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 159.2 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8899.37 ms. Allocated memory was 201.3 MB in the beginning and 285.7 MB in the end (delta: 84.4 MB). Free memory was 158.6 MB in the beginning and 138.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 104.3 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