/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s3iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:10:33,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:10:33,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:10:33,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:10:33,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:10:33,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:10:33,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:10:33,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:10:33,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:10:33,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:10:33,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:10:33,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:10:33,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:10:33,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:10:33,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:10:33,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:10:33,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:10:33,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:10:33,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:10:33,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:10:33,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:10:33,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:10:33,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:10:33,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:10:33,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:10:33,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:10:33,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:10:33,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:10:33,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:10:33,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:10:33,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:10:33,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:10:33,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:10:33,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:10:33,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:10:33,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:10:33,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:10:33,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:10:33,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:10:33,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:10:33,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:10:33,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 05:10:33,638 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:10:33,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:10:33,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:10:33,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:10:33,642 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:10:33,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:10:33,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:10:33,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:10:33,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:10:33,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:10:33,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:10:33,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:10:33,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:10:33,646 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:10:33,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:10:33,647 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:10:33,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:10:33,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:10:33,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:10:33,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:10:33,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:10:33,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:10:33,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:10:33,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:10:33,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:10:33,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:10:33,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:10:33,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:10:33,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:10:33,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:10:34,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:10:34,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:10:34,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:10:34,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:10:34,098 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:10:34,099 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2020-10-13 05:10:34,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ef2f65ac/517c7a2efd6f4e7ca953ab5be13d3165/FLAG7554a507e [2020-10-13 05:10:34,664 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:10:34,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s3iff.c [2020-10-13 05:10:34,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ef2f65ac/517c7a2efd6f4e7ca953ab5be13d3165/FLAG7554a507e [2020-10-13 05:10:35,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ef2f65ac/517c7a2efd6f4e7ca953ab5be13d3165 [2020-10-13 05:10:35,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:10:35,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:10:35,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:10:35,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:10:35,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:10:35,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:10:35" (1/1) ... [2020-10-13 05:10:35,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b1442d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:35, skipping insertion in model container [2020-10-13 05:10:35,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:10:35" (1/1) ... [2020-10-13 05:10:35,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:10:35,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:10:35,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:10:35,323 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:10:35,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:10:35,464 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:10:35,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:35 WrapperNode [2020-10-13 05:10:35,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:10:35,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:10:35,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:10:35,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:10:35,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:35" (1/1) ... [2020-10-13 05:10:35,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:35" (1/1) ... [2020-10-13 05:10:35,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:35" (1/1) ... [2020-10-13 05:10:35,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:35" (1/1) ... [2020-10-13 05:10:35,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:35" (1/1) ... [2020-10-13 05:10:35,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:35" (1/1) ... [2020-10-13 05:10:35,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:35" (1/1) ... [2020-10-13 05:10:35,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:10:35,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:10:35,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:10:35,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:10:35,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:10:35,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:10:35,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:10:35,612 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 05:10:35,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:10:35,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:10:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:10:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 05:10:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 05:10:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:10:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 05:10:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 05:10:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:10:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 05:10:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 05:10:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 05:10:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 05:10:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 05:10:35,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:10:35,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:10:35,976 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:10:35,977 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:10:35,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:10:35 BoogieIcfgContainer [2020-10-13 05:10:35,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:10:35,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:10:35,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:10:35,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:10:35,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:10:35" (1/3) ... [2020-10-13 05:10:35,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffc7262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:10:35, skipping insertion in model container [2020-10-13 05:10:35,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:35" (2/3) ... [2020-10-13 05:10:35,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffc7262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:10:35, skipping insertion in model container [2020-10-13 05:10:35,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:10:35" (3/3) ... [2020-10-13 05:10:35,992 INFO L109 eAbstractionObserver]: Analyzing ICFG s3iff.c [2020-10-13 05:10:36,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:10:36,013 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:10:36,030 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:10:36,058 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:10:36,058 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:10:36,058 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:10:36,059 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:10:36,059 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:10:36,059 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:10:36,059 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:10:36,059 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:10:36,083 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-13 05:10:36,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:10:36,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:36,093 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] [2020-10-13 05:10:36,094 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:36,100 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-10-13 05:10:36,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:36,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785901178] [2020-10-13 05:10:36,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:36,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:36,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:36,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:36,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:10:36,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:10:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-13 05:10:36,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 05:10:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:36,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 05:10:37,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:37,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:37,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:37,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:37,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:10:37,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:37,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:37,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:37,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:37,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:37,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:37,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:37,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 05:10:37,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 05:10:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:10:37,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785901178] [2020-10-13 05:10:37,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:10:37,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:10:37,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163173890] [2020-10-13 05:10:37,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:10:37,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:37,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:10:37,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:10:37,098 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-13 05:10:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:37,220 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-10-13 05:10:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:10:37,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 05:10:37,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:37,234 INFO L225 Difference]: With dead ends: 54 [2020-10-13 05:10:37,235 INFO L226 Difference]: Without dead ends: 25 [2020-10-13 05:10:37,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:10:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-13 05:10:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-13 05:10:37,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 05:10:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-13 05:10:37,292 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-10-13 05:10:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:37,293 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-13 05:10:37,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:10:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-13 05:10:37,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:10:37,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:37,295 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] [2020-10-13 05:10:37,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:10:37,296 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:37,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:37,296 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-10-13 05:10:37,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:37,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702271385] [2020-10-13 05:10:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:37,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:37,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:37,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:10:37,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:10:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-13 05:10:37,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:10:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:10:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:10:37,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:10:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:37,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:37,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:37,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:37,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:37,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:10:37,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:37,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:37,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:37,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:37,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:37,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:37,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:37,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:10:37,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:10:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:10:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:10:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:10:37,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702271385] [2020-10-13 05:10:37,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:10:37,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:10:37,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553795536] [2020-10-13 05:10:37,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:10:37,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:37,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:10:37,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:10:37,590 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-10-13 05:10:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:37,765 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-13 05:10:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:10:37,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-13 05:10:37,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:37,767 INFO L225 Difference]: With dead ends: 37 [2020-10-13 05:10:37,768 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 05:10:37,770 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 [2020-10-13 05:10:37,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 05:10:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 05:10:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 05:10:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-13 05:10:37,780 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-10-13 05:10:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:37,780 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-13 05:10:37,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:10:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-13 05:10:37,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 05:10:37,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:37,782 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] [2020-10-13 05:10:37,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:10:37,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:37,783 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-10-13 05:10:37,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:37,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400933067] [2020-10-13 05:10:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:37,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:38,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:38,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:38,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 05:10:38,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:10:38,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1186 [2020-10-13 05:10:38,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:10:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 05:10:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 05:10:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:39,419 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 34 [2020-10-13 05:10:39,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:39,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:39,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:39,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:39,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:10:39,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:39,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:10:39,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:39,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:39,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:39,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:39,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:39,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:10:39,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:39,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:10:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:10:39,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400933067] [2020-10-13 05:10:39,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:10:39,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:10:39,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043165285] [2020-10-13 05:10:39,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:10:39,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:39,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:10:39,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:10:39,539 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-10-13 05:10:39,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:39,908 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 05:10:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:10:39,909 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-13 05:10:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:39,913 INFO L225 Difference]: With dead ends: 42 [2020-10-13 05:10:39,913 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 05:10:39,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:10:39,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 05:10:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-13 05:10:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 05:10:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 05:10:39,925 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2020-10-13 05:10:39,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:39,925 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 05:10:39,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:10:39,925 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 05:10:39,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 05:10:39,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:39,927 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] [2020-10-13 05:10:39,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:10:39,927 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:39,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:39,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-10-13 05:10:39,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:39,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56756926] [2020-10-13 05:10:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:39,941 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-13 05:10:39,942 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-13 05:10:39,942 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:10:39,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:10:39,973 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-13 05:10:39,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:10:39 BoogieIcfgContainer [2020-10-13 05:10:39,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:10:39,979 INFO L168 Benchmark]: Toolchain (without parser) took 4912.70 ms. Allocated memory was 148.4 MB in the beginning and 242.7 MB in the end (delta: 94.4 MB). Free memory was 103.7 MB in the beginning and 187.1 MB in the end (delta: -83.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:39,983 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 05:10:39,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.69 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 103.3 MB in the beginning and 181.9 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:39,990 INFO L168 Benchmark]: Boogie Preprocessor took 69.22 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 179.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:39,991 INFO L168 Benchmark]: RCFGBuilder took 445.24 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 163.0 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:39,994 INFO L168 Benchmark]: TraceAbstraction took 3992.85 ms. Allocated memory was 203.4 MB in the beginning and 242.7 MB in the end (delta: 39.3 MB). Free memory was 162.4 MB in the beginning and 187.1 MB in the end (delta: -24.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:40,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 398.69 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 103.3 MB in the beginning and 181.9 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.22 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 179.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 445.24 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 163.0 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3992.85 ms. Allocated memory was 203.4 MB in the beginning and 242.7 MB in the end (delta: 39.3 MB). Free memory was 162.4 MB in the beginning and 187.1 MB in the end (delta: -24.7 MB). Peak memory consumption was 14.7 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