/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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/string-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:34:47,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:34:47,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:34:47,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:34:47,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:34:47,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:34:47,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:34:47,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:34:47,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:34:47,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:34:47,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:34:47,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:34:47,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:34:47,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:34:47,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:34:47,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:34:47,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:34:47,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:34:47,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:34:47,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:34:47,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:34:47,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:34:47,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:34:47,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:34:47,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:34:47,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:34:47,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:34:47,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:34:47,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:34:47,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:34:47,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:34:47,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:34:47,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:34:47,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:34:47,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:34:47,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:34:47,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:34:47,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:34:47,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:34:47,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:34:47,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:34:47,348 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 04:34:47,402 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:34:47,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:34:47,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:34:47,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:34:47,405 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:34:47,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:34:47,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:34:47,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:34:47,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:34:47,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:34:47,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:34:47,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:34:47,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:34:47,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:34:47,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:34:47,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:34:47,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:34:47,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:34:47,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:34:47,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:34:47,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:34:47,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:34:47,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:34:47,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:34:47,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:34:47,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:34:47,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:34:47,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:34:47,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:34:47,412 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:34:47,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:34:47,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:34:47,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:34:47,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:34:47,942 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:34:47,943 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-1.i [2020-09-25 04:34:48,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2fa0bbb/16a292ed93ef47c5b5c21d4f447e078d/FLAG138a72b2d [2020-09-25 04:34:48,583 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:34:48,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/string-1.i [2020-09-25 04:34:48,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2fa0bbb/16a292ed93ef47c5b5c21d4f447e078d/FLAG138a72b2d [2020-09-25 04:34:48,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2fa0bbb/16a292ed93ef47c5b5c21d4f447e078d [2020-09-25 04:34:48,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:34:48,938 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:34:48,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:34:48,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:34:48,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:34:48,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:34:48" (1/1) ... [2020-09-25 04:34:48,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:48, skipping insertion in model container [2020-09-25 04:34:48,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:34:48" (1/1) ... [2020-09-25 04:34:48,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:34:48,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:34:49,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:34:49,239 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:34:49,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:34:49,289 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:34:49,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49 WrapperNode [2020-09-25 04:34:49,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:34:49,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:34:49,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:34:49,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:34:49,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ... [2020-09-25 04:34:49,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ... [2020-09-25 04:34:49,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ... [2020-09-25 04:34:49,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ... [2020-09-25 04:34:49,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ... [2020-09-25 04:34:49,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ... [2020-09-25 04:34:49,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ... [2020-09-25 04:34:49,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:34:49,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:34:49,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:34:49,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:34:49,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (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 04:34:49,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:34:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:34:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 04:34:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 04:34:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:34:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:34:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:34:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 04:34:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 04:34:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 04:34:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:34:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:34:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:34:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:34:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:34:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:34:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:34:49,973 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:34:49,974 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 04:34:49,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:34:49 BoogieIcfgContainer [2020-09-25 04:34:49,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:34:49,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:34:49,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:34:49,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:34:49,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:34:48" (1/3) ... [2020-09-25 04:34:49,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4ead3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:34:49, skipping insertion in model container [2020-09-25 04:34:49,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (2/3) ... [2020-09-25 04:34:49,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4ead3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:34:49, skipping insertion in model container [2020-09-25 04:34:49,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:34:49" (3/3) ... [2020-09-25 04:34:49,991 INFO L109 eAbstractionObserver]: Analyzing ICFG string-1.i [2020-09-25 04:34:50,003 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:34:50,014 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:34:50,038 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:34:50,067 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:34:50,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:34:50,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:34:50,068 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:34:50,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:34:50,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:34:50,068 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:34:50,068 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:34:50,093 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 04:34:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 04:34:50,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:50,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:50,104 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:50,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:50,111 INFO L82 PathProgramCache]: Analyzing trace with hash -768807104, now seen corresponding path program 1 times [2020-09-25 04:34:50,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:50,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859046314] [2020-09-25 04:34:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:50,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:50,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:50,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:50,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:50,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:50,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:50,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:34:50,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:34:50,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 04:34:50,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:50,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:50,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:50,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 04:34:50,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:50,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:34:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:50,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:50,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:50,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:50,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:50,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:34:50,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:50,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:50,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:50,882 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 04:34:50,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859046314] [2020-09-25 04:34:50,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:34:50,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:34:50,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633777982] [2020-09-25 04:34:50,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:34:50,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:50,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:34:50,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:34:50,917 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 3 states. [2020-09-25 04:34:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:51,214 INFO L93 Difference]: Finished difference Result 188 states and 215 transitions. [2020-09-25 04:34:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:34:51,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-25 04:34:51,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:51,230 INFO L225 Difference]: With dead ends: 188 [2020-09-25 04:34:51,231 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 04:34:51,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:34:51,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 04:34:51,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-09-25 04:34:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 04:34:51,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-09-25 04:34:51,313 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 37 [2020-09-25 04:34:51,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:51,314 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-09-25 04:34:51,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:34:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-09-25 04:34:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 04:34:51,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:51,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:51,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:34:51,318 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:51,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:51,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1309055982, now seen corresponding path program 1 times [2020-09-25 04:34:51,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:51,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575328929] [2020-09-25 04:34:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:51,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:51,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:51,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 04:34:51,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:34:51,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-09-25 04:34:51,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:51,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:34:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:34:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:34:51,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:51,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:51,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:51,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:51,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:51,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:51,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:34:51,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:51,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:51,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:51,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:51,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:51,825 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 04:34:51,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575328929] [2020-09-25 04:34:51,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:34:51,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:34:51,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911528074] [2020-09-25 04:34:51,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:34:51,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:51,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:34:51,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:34:51,830 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 4 states. [2020-09-25 04:34:52,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:52,009 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2020-09-25 04:34:52,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:34:52,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-25 04:34:52,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:52,011 INFO L225 Difference]: With dead ends: 144 [2020-09-25 04:34:52,012 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 04:34:52,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:34:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 04:34:52,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2020-09-25 04:34:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 04:34:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-09-25 04:34:52,025 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 41 [2020-09-25 04:34:52,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:52,025 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-09-25 04:34:52,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:34:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-09-25 04:34:52,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 04:34:52,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:52,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:52,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:34:52,029 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:52,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:52,029 INFO L82 PathProgramCache]: Analyzing trace with hash 512896601, now seen corresponding path program 1 times [2020-09-25 04:34:52,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:52,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493747177] [2020-09-25 04:34:52,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:52,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:53,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:53,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 04:34:53,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:34:53,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1431 [2020-09-25 04:34:53,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:53,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:34:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:34:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:34:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:53,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:53,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:53,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:53,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:53,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:34:53,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:53,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:34:53,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493747177] [2020-09-25 04:34:53,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:34:53,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:34:53,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608817351] [2020-09-25 04:34:53,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:34:53,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:53,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:34:53,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:34:53,560 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 6 states. [2020-09-25 04:34:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:53,748 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-09-25 04:34:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:34:53,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-25 04:34:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:53,750 INFO L225 Difference]: With dead ends: 152 [2020-09-25 04:34:53,750 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 04:34:53,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:34:53,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 04:34:53,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2020-09-25 04:34:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 04:34:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-09-25 04:34:53,760 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 55 [2020-09-25 04:34:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:53,761 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-09-25 04:34:53,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:34:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-09-25 04:34:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 04:34:53,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:53,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:53,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:34:53,764 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:53,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1958895614, now seen corresponding path program 2 times [2020-09-25 04:34:53,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:53,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24298438] [2020-09-25 04:34:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:53,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:53,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:55,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:55,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:34:55,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:34:55,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2040 [2020-09-25 04:34:55,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:55,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:34:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:34:55,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:34:55,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:55,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:55,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:55,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:55,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:55,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:34:55,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:55,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 04:34:55,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24298438] [2020-09-25 04:34:55,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:34:55,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:34:55,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640489369] [2020-09-25 04:34:55,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:34:55,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:55,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:34:55,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:34:55,893 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 6 states. [2020-09-25 04:34:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:56,084 INFO L93 Difference]: Finished difference Result 142 states and 151 transitions. [2020-09-25 04:34:56,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:34:56,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-09-25 04:34:56,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:56,086 INFO L225 Difference]: With dead ends: 142 [2020-09-25 04:34:56,086 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 04:34:56,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:34:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 04:34:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 93. [2020-09-25 04:34:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 04:34:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2020-09-25 04:34:56,096 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 62 [2020-09-25 04:34:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:56,096 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2020-09-25 04:34:56,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:34:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2020-09-25 04:34:56,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:34:56,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:56,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:56,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:34:56,099 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:56,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:56,099 INFO L82 PathProgramCache]: Analyzing trace with hash 11176526, now seen corresponding path program 3 times [2020-09-25 04:34:56,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:56,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715800863] [2020-09-25 04:34:56,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:56,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:56,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:59,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:59,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:34:59,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:34:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3185 [2020-09-25 04:34:59,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:59,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:34:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 04:34:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:34:59,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:59,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:59,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:59,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:59,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:59,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:34:59,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:59,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:59,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 04:34:59,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715800863] [2020-09-25 04:34:59,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:34:59,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:34:59,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276340197] [2020-09-25 04:34:59,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:34:59,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:59,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:34:59,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:34:59,469 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 6 states. [2020-09-25 04:34:59,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:59,682 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-09-25 04:34:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:34:59,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-09-25 04:34:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:59,684 INFO L225 Difference]: With dead ends: 93 [2020-09-25 04:34:59,684 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:34:59,685 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 [2020-09-25 04:34:59,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:34:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:34:59,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:34:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:34:59,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2020-09-25 04:34:59,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:59,687 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:34:59,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:34:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:34:59,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:34:59,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:34:59,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:34:59,835 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 04:34:59,835 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 04:34:59,835 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:34:59,836 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 04:34:59,836 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:34:59,836 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:34:59,836 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 04:34:59,837 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 04:34:59,837 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:34:59,837 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 04:34:59,837 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 04:34:59,838 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 04:34:59,838 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 04:34:59,838 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 04:34:59,838 INFO L268 CegarLoopResult]: For program point L35-2(line 35) no Hoare annotation was computed. [2020-09-25 04:34:59,838 INFO L268 CegarLoopResult]: For program point L35-4(line 35) no Hoare annotation was computed. [2020-09-25 04:34:59,839 INFO L264 CegarLoopResult]: At program point L35-5(lines 35 36) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 04:34:59,839 INFO L268 CegarLoopResult]: For program point L35-6(lines 18 61) no Hoare annotation was computed. [2020-09-25 04:34:59,839 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 04:34:59,839 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 04:34:59,839 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 04:34:59,839 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 61) no Hoare annotation was computed. [2020-09-25 04:34:59,840 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 04:34:59,840 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,840 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,840 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,840 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,840 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,841 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,841 INFO L268 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,841 INFO L268 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,841 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 04:34:59,841 INFO L268 CegarLoopResult]: For program point L19-8(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,842 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-09-25 04:34:59,842 INFO L268 CegarLoopResult]: For program point L19-9(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,842 INFO L268 CegarLoopResult]: For program point L44-2(lines 44 53) no Hoare annotation was computed. [2020-09-25 04:34:59,842 INFO L268 CegarLoopResult]: For program point L19-10(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,842 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-25 04:34:59,842 INFO L268 CegarLoopResult]: For program point L19-11(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,843 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-25 04:34:59,843 INFO L268 CegarLoopResult]: For program point L19-12(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,843 INFO L268 CegarLoopResult]: For program point L19-13(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,843 INFO L268 CegarLoopResult]: For program point L44-6(line 44) no Hoare annotation was computed. [2020-09-25 04:34:59,843 INFO L268 CegarLoopResult]: For program point L44-7(line 44) no Hoare annotation was computed. [2020-09-25 04:34:59,843 INFO L268 CegarLoopResult]: For program point L19-14(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,843 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-25 04:34:59,844 INFO L264 CegarLoopResult]: At program point L44-8(lines 42 54) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 04:34:59,844 INFO L268 CegarLoopResult]: For program point L19-15(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,844 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-09-25 04:34:59,844 INFO L268 CegarLoopResult]: For program point L19-16(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,844 INFO L268 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2020-09-25 04:34:59,845 INFO L268 CegarLoopResult]: For program point L19-17(line 19) no Hoare annotation was computed. [2020-09-25 04:34:59,845 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 04:34:59,845 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-25 04:34:59,845 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-25 04:34:59,846 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 04:34:59,846 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 04:34:59,846 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 04:34:59,846 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 04:34:59,846 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 04:34:59,847 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 04:34:59,847 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-25 04:34:59,847 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 61) no Hoare annotation was computed. [2020-09-25 04:34:59,847 INFO L268 CegarLoopResult]: For program point L46-2(line 46) no Hoare annotation was computed. [2020-09-25 04:34:59,848 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 04:34:59,848 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 04:34:59,848 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 17 61) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 04:34:59,848 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 04:34:59,849 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 23) no Hoare annotation was computed. [2020-09-25 04:34:59,849 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 04:34:59,849 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-25 04:34:59,849 INFO L264 CegarLoopResult]: At program point L22-6(lines 22 23) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 04:34:59,849 INFO L268 CegarLoopResult]: For program point L22-7(lines 22 23) no Hoare annotation was computed. [2020-09-25 04:34:59,850 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 04:34:59,850 INFO L268 CegarLoopResult]: For program point L47-1(line 47) no Hoare annotation was computed. [2020-09-25 04:34:59,850 INFO L268 CegarLoopResult]: For program point L47-2(line 47) no Hoare annotation was computed. [2020-09-25 04:34:59,850 INFO L268 CegarLoopResult]: For program point L31-1(lines 31 32) no Hoare annotation was computed. [2020-09-25 04:34:59,850 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-25 04:34:59,851 INFO L268 CegarLoopResult]: For program point L31-4(line 31) no Hoare annotation was computed. [2020-09-25 04:34:59,851 INFO L264 CegarLoopResult]: At program point L31-5(lines 31 32) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 04:34:59,851 INFO L268 CegarLoopResult]: For program point L31-6(lines 31 32) no Hoare annotation was computed. [2020-09-25 04:34:59,851 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 04:34:59,851 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 04:34:59,852 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 04:34:59,852 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 04:34:59,852 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-25 04:34:59,852 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-25 04:34:59,852 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 04:34:59,852 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 04:34:59,852 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 04:34:59,853 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-25 04:34:59,853 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 04:34:59,853 INFO L268 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-09-25 04:34:59,853 INFO L264 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 04:34:59,853 INFO L268 CegarLoopResult]: For program point L58-1(line 58) no Hoare annotation was computed. [2020-09-25 04:34:59,854 INFO L268 CegarLoopResult]: For program point L42-2(lines 42 54) no Hoare annotation was computed. [2020-09-25 04:34:59,854 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 04:34:59,854 INFO L268 CegarLoopResult]: For program point L26-3(lines 26 27) no Hoare annotation was computed. [2020-09-25 04:34:59,854 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-25 04:34:59,855 INFO L268 CegarLoopResult]: For program point L26-5(line 26) no Hoare annotation was computed. [2020-09-25 04:34:59,855 INFO L264 CegarLoopResult]: At program point L26-6(lines 26 27) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 04:34:59,855 INFO L268 CegarLoopResult]: For program point L26-7(lines 26 27) no Hoare annotation was computed. [2020-09-25 04:34:59,855 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 04:34:59,855 INFO L268 CegarLoopResult]: For program point L35-1(lines 35 36) no Hoare annotation was computed. [2020-09-25 04:34:59,856 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true [2020-09-25 04:34:59,856 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-25 04:34:59,856 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 04:34:59,856 INFO L268 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-09-25 04:34:59,856 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 12) no Hoare annotation was computed. [2020-09-25 04:34:59,857 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-25 04:34:59,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:34:59 BoogieIcfgContainer [2020-09-25 04:34:59,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:34:59,889 INFO L168 Benchmark]: Toolchain (without parser) took 10954.49 ms. Allocated memory was 138.4 MB in the beginning and 311.4 MB in the end (delta: 173.0 MB). Free memory was 102.1 MB in the beginning and 155.4 MB in the end (delta: -53.3 MB). Peak memory consumption was 119.7 MB. Max. memory is 7.1 GB. [2020-09-25 04:34:59,890 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:34:59,891 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.37 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 90.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:34:59,893 INFO L168 Benchmark]: Boogie Preprocessor took 147.57 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 90.7 MB in the beginning and 178.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:34:59,893 INFO L168 Benchmark]: RCFGBuilder took 541.78 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 154.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-25 04:34:59,895 INFO L168 Benchmark]: TraceAbstraction took 9903.64 ms. Allocated memory was 201.3 MB in the beginning and 311.4 MB in the end (delta: 110.1 MB). Free memory was 153.6 MB in the beginning and 155.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2020-09-25 04:34:59,899 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 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 350.37 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 90.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.57 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 90.7 MB in the beginning and 178.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 541.78 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 154.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9903.64 ms. Allocated memory was 201.3 MB in the beginning and 311.4 MB in the end (delta: 110.1 MB). Free memory was 153.6 MB in the beginning and 155.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 108.3 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: 35]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 110 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.6s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 413 SDtfs, 119 SDslu, 615 SDs, 0 SdLazy, 556 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred 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, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 58 HoareAnnotationTreeSize, 15 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 259 ConstructedInterpolants, 0 QuantifiedInterpolants, 19224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 28/30 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...