/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/s3if.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:10:36,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:10:36,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:10:37,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:10:37,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:10:37,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:10:37,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:10:37,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:10:37,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:10:37,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:10:37,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:10:37,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:10:37,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:10:37,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:10:37,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:10:37,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:10:37,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:10:37,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:10:37,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:10:37,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:10:37,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:10:37,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:10:37,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:10:37,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:10:37,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:10:37,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:10:37,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:10:37,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:10:37,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:10:37,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:10:37,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:10:37,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:10:37,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:10:37,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:10:37,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:10:37,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:10:37,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:10:37,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:10:37,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:10:37,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:10:37,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:10:37,090 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 05:10:37,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:10:37,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:10:37,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:10:37,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:10:37,133 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:10:37,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:10:37,133 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:10:37,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:10:37,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:10:37,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:10:37,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:10:37,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:10:37,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:10:37,136 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:10:37,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:10:37,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:10:37,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:10:37,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:10:37,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:10:37,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:10:37,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:10:37,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:10:37,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:10:37,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:10:37,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:10:37,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:10:37,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:10:37,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:10:37,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:10:37,139 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 05:10:37,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:10:37,472 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:10:37,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:10:37,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:10:37,480 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:10:37,481 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3if.c [2020-10-13 05:10:37,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0664ff50c/e7fa427724ad4dc3b3f6d5baf8e21142/FLAGe90ce3520 [2020-10-13 05:10:38,003 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:10:38,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s3if.c [2020-10-13 05:10:38,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0664ff50c/e7fa427724ad4dc3b3f6d5baf8e21142/FLAGe90ce3520 [2020-10-13 05:10:38,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0664ff50c/e7fa427724ad4dc3b3f6d5baf8e21142 [2020-10-13 05:10:38,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:10:38,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:10:38,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:10:38,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:10:38,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:10:38,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:10:38" (1/1) ... [2020-10-13 05:10:38,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286d3891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:38, skipping insertion in model container [2020-10-13 05:10:38,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:10:38" (1/1) ... [2020-10-13 05:10:38,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:10:38,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:10:38,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:10:38,692 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:10:38,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:10:38,739 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:10:38,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:38 WrapperNode [2020-10-13 05:10:38,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:10:38,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:10:38,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:10:38,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:10:38,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:38" (1/1) ... [2020-10-13 05:10:38,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:38" (1/1) ... [2020-10-13 05:10:38,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:38" (1/1) ... [2020-10-13 05:10:38,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:38" (1/1) ... [2020-10-13 05:10:38,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:38" (1/1) ... [2020-10-13 05:10:38,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:38" (1/1) ... [2020-10-13 05:10:38,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:38" (1/1) ... [2020-10-13 05:10:38,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:10:38,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:10:38,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:10:38,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:10:38,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:38" (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 05:10:38,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:10:38,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:10:38,966 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 05:10:38,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:10:38,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:10:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:10:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 05:10:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 05:10:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:10:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 05:10:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 05:10:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:10:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 05:10:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 05:10:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 05:10:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 05:10:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 05:10:38,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:10:38,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:10:39,412 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:10:39,413 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:10:39,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:10:39 BoogieIcfgContainer [2020-10-13 05:10:39,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:10:39,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:10:39,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:10:39,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:10:39,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:10:38" (1/3) ... [2020-10-13 05:10:39,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d853638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:10:39, skipping insertion in model container [2020-10-13 05:10:39,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:38" (2/3) ... [2020-10-13 05:10:39,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d853638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:10:39, skipping insertion in model container [2020-10-13 05:10:39,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:10:39" (3/3) ... [2020-10-13 05:10:39,428 INFO L109 eAbstractionObserver]: Analyzing ICFG s3if.c [2020-10-13 05:10:39,440 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:10:39,450 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:10:39,467 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:10:39,494 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:10:39,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:10:39,494 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:10:39,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:10:39,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:10:39,495 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:10:39,496 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:10:39,496 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:10:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-13 05:10:39,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:10:39,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:39,524 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 05:10:39,524 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:39,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:39,531 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-10-13 05:10:39,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:39,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842158931] [2020-10-13 05:10:39,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:39,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:39,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:40,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:40,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:10:40,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:10:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-13 05:10:40,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 05:10:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:40,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 05:10:40,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:40,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:40,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:40,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:40,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:40,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:10:40,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:40,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:40,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:40,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:40,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:10:40,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 05:10:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:40,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:40,323 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 05:10:40,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842158931] [2020-10-13 05:10:40,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:10:40,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:10:40,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549929913] [2020-10-13 05:10:40,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:10:40,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:40,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:10:40,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:10:40,352 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-13 05:10:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:40,481 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-10-13 05:10:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:10:40,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 05:10:40,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:40,492 INFO L225 Difference]: With dead ends: 54 [2020-10-13 05:10:40,492 INFO L226 Difference]: Without dead ends: 25 [2020-10-13 05:10:40,496 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 05:10:40,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-13 05:10:40,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-13 05:10:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 05:10:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-13 05:10:40,539 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-10-13 05:10:40,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:40,540 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-13 05:10:40,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:10:40,540 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-13 05:10:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:10:40,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:40,542 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 05:10:40,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:10:40,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:40,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:40,543 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-10-13 05:10:40,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:40,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908766394] [2020-10-13 05:10:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:40,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:40,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:10:40,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:10:40,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-13 05:10:40,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:10:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:10:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:10:40,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:10:40,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:40,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:40,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:40,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:40,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:10:40,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:40,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:40,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:40,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:40,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:40,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:40,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:40,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:40,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:40,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:10:40,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:40,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:10:40,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:40,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:10:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:10:40,898 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 05:10:40,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908766394] [2020-10-13 05:10:40,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:10:40,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:10:40,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653460721] [2020-10-13 05:10:40,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:10:40,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:40,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:10:40,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:10:40,906 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-10-13 05:10:41,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:41,106 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-13 05:10:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:10:41,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-13 05:10:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:41,109 INFO L225 Difference]: With dead ends: 37 [2020-10-13 05:10:41,110 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 05:10:41,112 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 05:10:41,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 05:10:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 05:10:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 05:10:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-13 05:10:41,133 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-10-13 05:10:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:41,134 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-13 05:10:41,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:10:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-13 05:10:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 05:10:41,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:41,138 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 05:10:41,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:10:41,139 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:41,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:41,140 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-10-13 05:10:41,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:41,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254836733] [2020-10-13 05:10:41,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:41,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:42,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:42,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 05:10:42,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:10:42,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1273 [2020-10-13 05:10:42,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:42,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:10:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 05:10:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 05:10:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:10:42,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:42,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:42,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:42,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:42,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:10:42,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:42,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:10:42,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:42,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:42,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:42,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:42,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:10:42,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:42,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:42,923 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 05:10:42,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254836733] [2020-10-13 05:10:42,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:10:42,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:10:42,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329344832] [2020-10-13 05:10:42,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:10:42,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:42,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:10:42,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:10:42,926 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-10-13 05:10:43,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:43,439 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 05:10:43,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 05:10:43,440 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-13 05:10:43,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:43,443 INFO L225 Difference]: With dead ends: 50 [2020-10-13 05:10:43,444 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 05:10:43,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:10:43,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 05:10:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2020-10-13 05:10:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 05:10:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 05:10:43,455 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2020-10-13 05:10:43,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:43,455 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 05:10:43,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:10:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 05:10:43,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 05:10:43,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:43,457 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 05:10:43,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:10:43,457 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:43,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:43,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-10-13 05:10:43,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:43,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761374083] [2020-10-13 05:10:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:43,470 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-13 05:10:43,471 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-13 05:10:43,471 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:10:43,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:10:43,494 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-13 05:10:43,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:10:43 BoogieIcfgContainer [2020-10-13 05:10:43,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:10:43,498 INFO L168 Benchmark]: Toolchain (without parser) took 5105.14 ms. Allocated memory was 140.0 MB in the beginning and 245.9 MB in the end (delta: 105.9 MB). Free memory was 102.7 MB in the beginning and 195.1 MB in the end (delta: -92.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:43,499 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 05:10:43,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.31 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 92.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:43,501 INFO L168 Benchmark]: Boogie Preprocessor took 150.64 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 180.4 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:43,501 INFO L168 Benchmark]: RCFGBuilder took 526.03 ms. Allocated memory is still 203.4 MB. Free memory was 180.4 MB in the beginning and 163.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:43,502 INFO L168 Benchmark]: TraceAbstraction took 4075.90 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 162.8 MB in the beginning and 195.1 MB in the end (delta: -32.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:43,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.31 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 92.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.64 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 180.4 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 526.03 ms. Allocated memory is still 203.4 MB. Free memory was 180.4 MB in the beginning and 163.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4075.90 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 162.8 MB in the beginning and 195.1 MB in the end (delta: -32.3 MB). Peak memory consumption was 10.2 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] = 0 [L30] i=0 [L30] COND TRUE i