/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-examples/standard_sentinel.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:03:56,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:03:56,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:03:56,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:03:56,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:03:56,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:03:56,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:03:56,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:03:56,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:03:56,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:03:56,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:03:56,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:03:56,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:03:56,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:03:56,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:03:56,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:03:56,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:03:56,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:03:56,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:03:56,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:03:56,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:03:56,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:03:56,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:03:56,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:03:56,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:03:56,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:03:56,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:03:56,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:03:56,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:03:56,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:03:56,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:03:56,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:03:56,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:03:56,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:03:56,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:03:56,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:03:56,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:03:56,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:03:56,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:03:56,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:03:56,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:03:56,217 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 18:03:56,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:03:56,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:03:56,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:03:56,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:03:56,257 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:03:56,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:03:56,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:03:56,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:03:56,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:03:56,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:03:56,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:03:56,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:03:56,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:03:56,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:03:56,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:03:56,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:03:56,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:03:56,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:03:56,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:03:56,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:03:56,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:03:56,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:03:56,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:03:56,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:03:56,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:03:56,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:03:56,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:03:56,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:03:56,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:03:56,263 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 18:03:56,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:03:56,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:03:56,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:03:56,590 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:03:56,591 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:03:56,591 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c [2020-10-14 18:03:56,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35d3e3f69/ad76ca7b49384ec48a97b2bfeb924f94/FLAGf7c0826d2 [2020-10-14 18:03:57,131 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:03:57,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c [2020-10-14 18:03:57,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35d3e3f69/ad76ca7b49384ec48a97b2bfeb924f94/FLAGf7c0826d2 [2020-10-14 18:03:57,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35d3e3f69/ad76ca7b49384ec48a97b2bfeb924f94 [2020-10-14 18:03:57,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:03:57,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:03:57,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:03:57,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:03:57,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:03:57,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:03:57" (1/1) ... [2020-10-14 18:03:57,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:57, skipping insertion in model container [2020-10-14 18:03:57,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:03:57" (1/1) ... [2020-10-14 18:03:57,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:03:57,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:03:57,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:03:57,753 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:03:57,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:03:57,793 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:03:57,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:57 WrapperNode [2020-10-14 18:03:57,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:03:57,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:03:57,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:03:57,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:03:57,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:57" (1/1) ... [2020-10-14 18:03:57,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:57" (1/1) ... [2020-10-14 18:03:57,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:57" (1/1) ... [2020-10-14 18:03:57,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:57" (1/1) ... [2020-10-14 18:03:57,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:57" (1/1) ... [2020-10-14 18:03:57,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:57" (1/1) ... [2020-10-14 18:03:57,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:57" (1/1) ... [2020-10-14 18:03:57,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:03:57,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:03:57,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:03:57,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:03:57,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:57" (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 18:03:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:03:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:03:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:03:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:03:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:03:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:03:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:03:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:03:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:03:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:03:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:03:57,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:03:57,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:03:58,222 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:03:58,222 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 18:03:58,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:03:58 BoogieIcfgContainer [2020-10-14 18:03:58,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:03:58,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:03:58,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:03:58,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:03:58,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:03:57" (1/3) ... [2020-10-14 18:03:58,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ec4ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:03:58, skipping insertion in model container [2020-10-14 18:03:58,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:57" (2/3) ... [2020-10-14 18:03:58,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ec4ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:03:58, skipping insertion in model container [2020-10-14 18:03:58,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:03:58" (3/3) ... [2020-10-14 18:03:58,235 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_sentinel.i.v+cfa-reducer.c [2020-10-14 18:03:58,247 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:03:58,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:03:58,272 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:03:58,298 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:03:58,298 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:03:58,298 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:03:58,298 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:03:58,298 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:03:58,299 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:03:58,299 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:03:58,299 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:03:58,318 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-14 18:03:58,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 18:03:58,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:58,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:58,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:58,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:58,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1429065311, now seen corresponding path program 1 times [2020-10-14 18:03:58,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:58,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976207553] [2020-10-14 18:03:58,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:58,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:58,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:58,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 18:03:58,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:58,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-14 18:03:58,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:58,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:58,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:03:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:03:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 18:03:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:03:58,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:58,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:58,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:58,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:03:58,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:58,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:58,914 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 18:03:58,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976207553] [2020-10-14 18:03:58,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:03:58,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 18:03:58,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946628941] [2020-10-14 18:03:58,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:03:58,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:58,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:03:58,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:03:58,941 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 6 states. [2020-10-14 18:03:59,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:59,060 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2020-10-14 18:03:59,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:03:59,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-14 18:03:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:59,073 INFO L225 Difference]: With dead ends: 37 [2020-10-14 18:03:59,073 INFO L226 Difference]: Without dead ends: 17 [2020-10-14 18:03:59,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:03:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-14 18:03:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-14 18:03:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-14 18:03:59,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-14 18:03:59,113 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-10-14 18:03:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:59,114 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-14 18:03:59,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:03:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-14 18:03:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 18:03:59,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:59,115 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:59,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:03:59,116 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:59,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1194933212, now seen corresponding path program 1 times [2020-10-14 18:03:59,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:59,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088885867] [2020-10-14 18:03:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:59,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:59,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:59,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 18:03:59,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 18:03:59,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:59,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:03:59,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:03:59,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:03:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:03:59,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:59,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:59,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:59,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:59,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:59,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:03:59,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:59,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:59,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:59,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:03:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:59,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088885867] [2020-10-14 18:03:59,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:59,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:03:59,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863806359] [2020-10-14 18:03:59,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:03:59,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:59,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:03:59,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:03:59,745 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2020-10-14 18:03:59,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:59,942 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-10-14 18:03:59,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:03:59,943 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-14 18:03:59,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:59,945 INFO L225 Difference]: With dead ends: 22 [2020-10-14 18:03:59,945 INFO L226 Difference]: Without dead ends: 19 [2020-10-14 18:03:59,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:03:59,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-14 18:03:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-14 18:03:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-14 18:03:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-10-14 18:03:59,954 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2020-10-14 18:03:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:59,955 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-10-14 18:03:59,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:03:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-10-14 18:03:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 18:03:59,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:59,959 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:59,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:03:59,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:59,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1572460575, now seen corresponding path program 2 times [2020-10-14 18:03:59,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:59,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056028199] [2020-10-14 18:03:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:59,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:00,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:00,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:00,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 18:04:00,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 18:04:00,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:00,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:04:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:04:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 18:04:00,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:00,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:00,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:00,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:00,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:00,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:00,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:04:00,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:00,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:04:00,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056028199] [2020-10-14 18:04:00,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:00,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:04:00,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262551039] [2020-10-14 18:04:00,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:04:00,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:00,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:04:00,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:04:00,411 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 10 states. [2020-10-14 18:04:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:00,541 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-14 18:04:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 18:04:00,542 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-14 18:04:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:00,543 INFO L225 Difference]: With dead ends: 19 [2020-10-14 18:04:00,543 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 18:04:00,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:04:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 18:04:00,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 18:04:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 18:04:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 18:04:00,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-14 18:04:00,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:00,548 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 18:04:00,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:04:00,548 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 18:04:00,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 18:04:00,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:04:00,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 18:04:00,672 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 18:04:00,673 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= ~__return_60~0 |old(~__return_60~0)|)) [2020-10-14 18:04:00,673 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 18:04:00,673 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 18:04:00,673 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 18:04:00,674 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 18:04:00,674 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 18:04:00,674 INFO L268 CegarLoopResult]: For program point L27(lines 27 50) no Hoare annotation was computed. [2020-10-14 18:04:00,674 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 7 61) no Hoare annotation was computed. [2020-10-14 18:04:00,675 INFO L268 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-10-14 18:04:00,675 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 7 61) no Hoare annotation was computed. [2020-10-14 18:04:00,675 INFO L271 CegarLoopResult]: At program point L15-3(lines 15 18) the Hoare annotation is: true [2020-10-14 18:04:00,675 INFO L268 CegarLoopResult]: For program point L15-4(lines 8 61) no Hoare annotation was computed. [2020-10-14 18:04:00,676 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) no Hoare annotation was computed. [2020-10-14 18:04:00,676 INFO L264 CegarLoopResult]: At program point L30(lines 23 51) the Hoare annotation is: (and (= main_~main__marker~0 (select (select |#memory_int| |main_~#main__a~0.base|) (+ |main_~#main__a~0.offset| (* main_~main__pos~0 4)))) (<= 0 main_~main__pos~0) (<= main_~main__i~0 main_~main__pos~0)) [2020-10-14 18:04:00,676 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 7 61) the Hoare annotation is: (and (= |old(#valid)| |#valid|) (= |old(~__return_60~0)| ~__return_60~0)) [2020-10-14 18:04:00,676 INFO L268 CegarLoopResult]: For program point L22(lines 22 55) no Hoare annotation was computed. [2020-10-14 18:04:00,677 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-10-14 18:04:00,677 INFO L268 CegarLoopResult]: For program point L39(lines 39 48) no Hoare annotation was computed. [2020-10-14 18:04:00,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 18:04:00,706 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 18:04:00,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:04:00 BoogieIcfgContainer [2020-10-14 18:04:00,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:04:00,731 INFO L168 Benchmark]: Toolchain (without parser) took 3191.80 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 102.1 MB in the beginning and 92.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 106.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:04:00,732 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 18:04:00,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.99 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-14 18:04:00,736 INFO L168 Benchmark]: Boogie Preprocessor took 119.83 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.8 MB in the beginning and 178.8 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-14 18:04:00,737 INFO L168 Benchmark]: RCFGBuilder took 311.97 ms. Allocated memory is still 201.9 MB. Free memory was 178.8 MB in the beginning and 164.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-10-14 18:04:00,741 INFO L168 Benchmark]: TraceAbstraction took 2497.76 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 164.1 MB in the beginning and 92.3 MB in the end (delta: 71.8 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2020-10-14 18:04:00,748 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.99 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.83 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.8 MB in the beginning and 178.8 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 311.97 ms. Allocated memory is still 201.9 MB. Free memory was 178.8 MB in the beginning and 164.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2497.76 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 164.1 MB in the beginning and 92.3 MB in the end (delta: 71.8 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: 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: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant [2020-10-14 18:04:00,775 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 18:04:00,775 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (main__marker == unknown-#memory_int-unknown[main__a][main__a + main__pos * 4] && 0 <= main__pos) && main__i <= main__pos - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 31 SDslu, 120 SDs, 0 SdLazy, 129 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 44 HoareAnnotationTreeSize, 6 FomulaSimplifications, 35 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 3068 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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...