/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_infinite_loop_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:46:37,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:46:37,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:46:37,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:46:37,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:46:37,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:46:37,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:46:38,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:46:38,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:46:38,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:46:38,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:46:38,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:46:38,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:46:38,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:46:38,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:46:38,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:46:38,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:46:38,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:46:38,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:46:38,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:46:38,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:46:38,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:46:38,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:46:38,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:46:38,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:46:38,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:46:38,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:46:38,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:46:38,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:46:38,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:46:38,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:46:38,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:46:38,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:46:38,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:46:38,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:46:38,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:46:38,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:46:38,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:46:38,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:46:38,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:46:38,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:46:38,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:46:38,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:46:38,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:46:38,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:46:38,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:46:38,075 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:46:38,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:46:38,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:46:38,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:46:38,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:46:38,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:46:38,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:46:38,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:46:38,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:46:38,077 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:46:38,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:46:38,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:46:38,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:46:38,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:46:38,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:46:38,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:46:38,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:46:38,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:46:38,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:46:38,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:46:38,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:46:38,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:46:38,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:46:38,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:46:38,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:46:38,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:46:38,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:46:38,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:46:38,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:46:38,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:46:38,633 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:46:38,634 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_infinite_loop_1.c [2020-09-25 14:46:38,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2382b4e3a/190e0fd99f3c4e2595107aaabc404328/FLAG0cf371d4c [2020-09-25 14:46:39,291 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:46:39,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/for_infinite_loop_1.c [2020-09-25 14:46:39,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2382b4e3a/190e0fd99f3c4e2595107aaabc404328/FLAG0cf371d4c [2020-09-25 14:46:39,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2382b4e3a/190e0fd99f3c4e2595107aaabc404328 [2020-09-25 14:46:39,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:46:39,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:46:39,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:46:39,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:46:39,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:46:39,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:46:39" (1/1) ... [2020-09-25 14:46:39,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155d8a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:39, skipping insertion in model container [2020-09-25 14:46:39,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:46:39" (1/1) ... [2020-09-25 14:46:39,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:46:39,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:46:39,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:46:39,889 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:46:39,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:46:39,928 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:46:39,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:39 WrapperNode [2020-09-25 14:46:39,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:46:39,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:46:39,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:46:39,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:46:39,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:39" (1/1) ... [2020-09-25 14:46:39,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:39" (1/1) ... [2020-09-25 14:46:39,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:39" (1/1) ... [2020-09-25 14:46:39,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:39" (1/1) ... [2020-09-25 14:46:39,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:39" (1/1) ... [2020-09-25 14:46:39,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:39" (1/1) ... [2020-09-25 14:46:39,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:39" (1/1) ... [2020-09-25 14:46:40,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:46:40,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:46:40,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:46:40,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:46:40,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:46:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:46:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:46:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 14:46:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:46:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:46:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:46:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:46:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 14:46:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:46:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:46:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:46:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:46:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:46:40,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:46:40,342 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:46:40,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:46:40 BoogieIcfgContainer [2020-09-25 14:46:40,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:46:40,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:46:40,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:46:40,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:46:40,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:46:39" (1/3) ... [2020-09-25 14:46:40,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fc2dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:46:40, skipping insertion in model container [2020-09-25 14:46:40,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:39" (2/3) ... [2020-09-25 14:46:40,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fc2dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:46:40, skipping insertion in model container [2020-09-25 14:46:40,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:46:40" (3/3) ... [2020-09-25 14:46:40,360 INFO L109 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_1.c [2020-09-25 14:46:40,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:46:40,405 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:46:40,458 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:46:40,497 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:46:40,497 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:46:40,497 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:46:40,497 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:46:40,498 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:46:40,498 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:46:40,498 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:46:40,498 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:46:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-25 14:46:40,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 14:46:40,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:40,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:46:40,529 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:40,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:40,535 INFO L82 PathProgramCache]: Analyzing trace with hash 390901091, now seen corresponding path program 1 times [2020-09-25 14:46:40,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:40,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731032188] [2020-09-25 14:46:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:40,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:40,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:46:40,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:40,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 14:46:40,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:40,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:40,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:46:40,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:46:40,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:46:40,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:46:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:40,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:40,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:46:40,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:40,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:46:40,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:40,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:46:40,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731032188] [2020-09-25 14:46:40,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:46:40,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:46:40,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437404996] [2020-09-25 14:46:40,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:46:40,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:40,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:46:40,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:46:40,977 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-09-25 14:46:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:41,051 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-09-25 14:46:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:46:41,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 14:46:41,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:41,061 INFO L225 Difference]: With dead ends: 42 [2020-09-25 14:46:41,061 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:46:41,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:46:41,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:46:41,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:46:41,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:46:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:46:41,093 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-25 14:46:41,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:41,094 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:46:41,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:46:41,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:46:41,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:46:41,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:46:41,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 14:46:41,160 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 14:46:41,160 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:46:41,160 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:46:41,161 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 14:46:41,161 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 14:46:41,161 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:46:41,161 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 14:46:41,161 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 14:46:41,162 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 14:46:41,162 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 14:46:41,163 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 14:46:41,163 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 26) no Hoare annotation was computed. [2020-09-25 14:46:41,163 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (= main_~x~0 0) [2020-09-25 14:46:41,163 INFO L268 CegarLoopResult]: For program point L23-1(lines 21 24) no Hoare annotation was computed. [2020-09-25 14:46:41,164 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 14:46:41,164 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 14:46:41,165 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 14:46:41,165 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-25 14:46:41,166 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 14:46:41,166 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-25 14:46:41,166 INFO L264 CegarLoopResult]: At program point L21-5(lines 21 24) the Hoare annotation is: (= main_~x~0 0) [2020-09-25 14:46:41,167 INFO L264 CegarLoopResult]: At program point L21-6(lines 21 24) the Hoare annotation is: false [2020-09-25 14:46:41,167 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 26) no Hoare annotation was computed. [2020-09-25 14:46:41,167 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 26) the Hoare annotation is: true [2020-09-25 14:46:41,167 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 14:46:41,168 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 14:46:41,168 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 14:46:41,168 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 14:46:41,168 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true [2020-09-25 14:46:41,169 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-25 14:46:41,169 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 14:46:41,169 INFO L268 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-09-25 14:46:41,169 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 12) no Hoare annotation was computed. [2020-09-25 14:46:41,169 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-25 14:46:41,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:46:41 BoogieIcfgContainer [2020-09-25 14:46:41,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:46:41,196 INFO L168 Benchmark]: Toolchain (without parser) took 1573.90 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 103.7 MB in the beginning and 133.7 MB in the end (delta: -30.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:41,197 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:46:41,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.23 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 93.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:41,200 INFO L168 Benchmark]: Boogie Preprocessor took 117.46 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 93.6 MB in the beginning and 183.8 MB in the end (delta: -90.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:41,201 INFO L168 Benchmark]: RCFGBuilder took 303.09 ms. Allocated memory is still 203.9 MB. Free memory was 183.8 MB in the beginning and 169.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:41,202 INFO L168 Benchmark]: TraceAbstraction took 840.19 ms. Allocated memory is still 203.9 MB. Free memory was 169.2 MB in the beginning and 133.7 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:41,206 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 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.23 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 93.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.46 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 93.6 MB in the beginning and 183.8 MB in the end (delta: -90.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 303.09 ms. Allocated memory is still 203.9 MB. Free memory was 183.8 MB in the beginning and 169.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 840.19 ms. Allocated memory is still 203.9 MB. Free memory was 169.2 MB in the beginning and 133.7 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 11 SDslu, 52 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...