/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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-patterns/array8_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:24:56,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:24:56,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:24:56,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:24:56,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:24:57,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:24:57,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:24:57,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:24:57,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:24:57,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:24:57,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:24:57,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:24:57,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:24:57,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:24:57,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:24:57,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:24:57,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:24:57,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:24:57,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:24:57,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:24:57,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:24:57,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:24:57,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:24:57,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:24:57,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:24:57,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:24:57,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:24:57,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:24:57,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:24:57,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:24:57,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:24:57,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:24:57,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:24:57,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:24:57,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:24:57,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:24:57,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:24:57,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:24:57,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:24:57,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:24:57,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:24:57,064 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 [2020-10-14 18:24:57,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:24:57,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:24:57,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:24:57,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:24:57,119 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:24:57,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:24:57,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:24:57,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:24:57,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:24:57,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:24:57,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:24:57,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:24:57,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:24:57,123 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:24:57,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:24:57,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:24:57,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:24:57,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:24:57,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:24:57,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:24:57,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:24:57,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:24:57,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:24:57,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:24:57,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:24:57,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:24:57,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:24:57,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:24:57,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:24:57,127 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:24:57,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:24:57,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:24:57,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:24:57,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:24:57,472 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:24:57,473 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array8_pattern.c [2020-10-14 18:24:57,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1c1836e5/a562fce0c77a4f2e8f5fa95cb6f7f375/FLAG925e9be4e [2020-10-14 18:24:58,051 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:24:58,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-patterns/array8_pattern.c [2020-10-14 18:24:58,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1c1836e5/a562fce0c77a4f2e8f5fa95cb6f7f375/FLAG925e9be4e [2020-10-14 18:24:58,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1c1836e5/a562fce0c77a4f2e8f5fa95cb6f7f375 [2020-10-14 18:24:58,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:24:58,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:24:58,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:24:58,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:24:58,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:24:58,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:24:58" (1/1) ... [2020-10-14 18:24:58,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c23f4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58, skipping insertion in model container [2020-10-14 18:24:58,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:24:58" (1/1) ... [2020-10-14 18:24:58,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:24:58,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:24:58,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:24:58,711 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:24:58,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:24:58,856 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:24:58,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58 WrapperNode [2020-10-14 18:24:58,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:24:58,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:24:58,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:24:58,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:24:58,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58" (1/1) ... [2020-10-14 18:24:58,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58" (1/1) ... [2020-10-14 18:24:58,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58" (1/1) ... [2020-10-14 18:24:58,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58" (1/1) ... [2020-10-14 18:24:58,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58" (1/1) ... [2020-10-14 18:24:58,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58" (1/1) ... [2020-10-14 18:24:58,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58" (1/1) ... [2020-10-14 18:24:58,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:24:58,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:24:58,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:24:58,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:24:58,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58" (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 [2020-10-14 18:24:58,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:24:58,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:24:58,985 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:24:58,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:24:58,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:24:58,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:24:58,987 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:24:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:24:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:24:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:24:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-14 18:24:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:24:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:24:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:24:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:24:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:24:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:24:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:24:59,357 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:24:59,358 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:24:59,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:24:59 BoogieIcfgContainer [2020-10-14 18:24:59,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:24:59,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:24:59,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:24:59,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:24:59,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:24:58" (1/3) ... [2020-10-14 18:24:59,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66394a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:24:59, skipping insertion in model container [2020-10-14 18:24:59,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58" (2/3) ... [2020-10-14 18:24:59,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66394a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:24:59, skipping insertion in model container [2020-10-14 18:24:59,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:24:59" (3/3) ... [2020-10-14 18:24:59,372 INFO L109 eAbstractionObserver]: Analyzing ICFG array8_pattern.c [2020-10-14 18:24:59,386 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:24:59,394 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:24:59,409 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:24:59,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:24:59,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:24:59,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:24:59,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:24:59,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:24:59,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:24:59,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:24:59,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:24:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-14 18:24:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 18:24:59,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:24:59,465 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] [2020-10-14 18:24:59,465 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:24:59,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:24:59,472 INFO L82 PathProgramCache]: Analyzing trace with hash -945511344, now seen corresponding path program 1 times [2020-10-14 18:24:59,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:24:59,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357489917] [2020-10-14 18:24:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:24:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:59,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:59,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:59,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:59,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 18:24:59,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:24:59,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 18:24:59,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:59,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:24:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 18:24:59,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:24:59,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:24:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:24:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:59,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:59,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:59,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:24:59,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:24:59,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:24:59,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:59,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:59,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:24:59,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:24:59,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:24:59,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:24:59,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 18:24:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:59,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:59,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:59,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:59,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:24:59,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:24:59,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:24:59,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:59,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:24:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 18:24:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:24:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:24:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:24:59,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357489917] [2020-10-14 18:24:59,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:24:59,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 18:24:59,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597822636] [2020-10-14 18:24:59,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 18:24:59,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:24:59,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 18:24:59,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:24:59,949 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-14 18:25:00,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:00,113 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2020-10-14 18:25:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 18:25:00,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 18:25:00,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:00,126 INFO L225 Difference]: With dead ends: 65 [2020-10-14 18:25:00,127 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 18:25:00,131 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 [2020-10-14 18:25:00,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 18:25:00,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-14 18:25:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 18:25:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 18:25:00,180 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 21 [2020-10-14 18:25:00,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:00,181 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 18:25:00,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 18:25:00,181 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 18:25:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 18:25:00,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:00,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:00,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:25:00,184 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:00,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:00,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1477566463, now seen corresponding path program 1 times [2020-10-14 18:25:00,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:00,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019808741] [2020-10-14 18:25:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:00,208 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-14 18:25:00,208 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-14 18:25:00,208 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:25:00,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:25:00,242 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-14 18:25:00,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:25:00 BoogieIcfgContainer [2020-10-14 18:25:00,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:25:00,247 INFO L168 Benchmark]: Toolchain (without parser) took 1779.65 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 103.1 MB in the beginning and 119.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:00,250 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 18:25:00,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.76 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 103.1 MB in the beginning and 184.6 MB in the end (delta: -81.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:00,252 INFO L168 Benchmark]: Boogie Preprocessor took 54.37 ms. Allocated memory is still 206.0 MB. Free memory was 184.6 MB in the beginning and 182.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:00,253 INFO L168 Benchmark]: RCFGBuilder took 450.29 ms. Allocated memory is still 206.0 MB. Free memory was 182.4 MB in the beginning and 165.2 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:00,255 INFO L168 Benchmark]: TraceAbstraction took 878.27 ms. Allocated memory is still 206.0 MB. Free memory was 164.3 MB in the beginning and 119.4 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:00,264 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 390.76 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 103.1 MB in the beginning and 184.6 MB in the end (delta: -81.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.37 ms. Allocated memory is still 206.0 MB. Free memory was 184.6 MB in the beginning and 182.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.29 ms. Allocated memory is still 206.0 MB. Free memory was 182.4 MB in the beginning and 165.2 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 878.27 ms. Allocated memory is still 206.0 MB. Free memory was 164.3 MB in the beginning and 119.4 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 31]: 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: [L35] signed long long ARR_SIZE ; [L39] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L40] CALL assume_abort_if_not(ARR_SIZE > 0) [L29] COND FALSE !(!cond) [L40] RET assume_abort_if_not(ARR_SIZE > 0) [L42] int array1[ARR_SIZE] ; [L43] int array2[ARR_SIZE] ; [L44] int count = 0, num = -1 ; [L45] signed long long sum = 0 ; [L46] int temp ; [L47] short index ; [L49] count=0 [L49] COND FALSE !(count=0 && index < ARR_SIZE) [L29] COND FALSE !(!cond) [L61] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L63] array1[index] = num * (num * count) [L64] EXPR (index % 2 == 0) ? array2[index] : (num * count) [L64] EXPR array2[index] [L64] EXPR (index % 2 == 0) ? array2[index] : (num * count) [L64] array2[index] = (index % 2 == 0) ? array2[index] : (num * count) [L66] temp = __VERIFIER_nondet_int() [L67] COND TRUE temp == 0 [L70] count=0 [L70] COND FALSE !(count