/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:31:50,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:31:50,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:31:50,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:31:50,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:31:50,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:31:50,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:31:50,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:31:50,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:31:50,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:31:50,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:31:50,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:31:50,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:31:50,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:31:50,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:31:50,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:31:50,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:31:50,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:31:50,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:31:50,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:31:50,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:31:50,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:31:50,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:31:50,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:31:50,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:31:50,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:31:50,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:31:50,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:31:50,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:31:50,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:31:50,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:31:50,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:31:50,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:31:50,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:31:50,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:31:50,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:31:50,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:31:50,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:31:50,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:31:50,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:31:50,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:31:50,361 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 05:31:50,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:31:50,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:31:50,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:31:50,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:31:50,396 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:31:50,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:31:50,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:31:50,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:31:50,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:31:50,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:31:50,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:31:50,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:31:50,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:31:50,397 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:31:50,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:31:50,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:31:50,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:31:50,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:31:50,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:31:50,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:31:50,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:31:50,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:31:50,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:31:50,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:31:50,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:31:50,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:31:50,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:31:50,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:31:50,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:31:50,402 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:31:50,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:31:50,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:31:50,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:31:50,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:31:50,941 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:31:50,942 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-25 05:31:51,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0bb6a02/2790ffb441e74c25ba98e5ea3cd1936d/FLAG2a6b7bf39 [2020-09-25 05:31:51,534 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:31:51,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-25 05:31:51,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0bb6a02/2790ffb441e74c25ba98e5ea3cd1936d/FLAG2a6b7bf39 [2020-09-25 05:31:51,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0bb6a02/2790ffb441e74c25ba98e5ea3cd1936d [2020-09-25 05:31:51,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:31:51,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:31:51,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:31:51,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:31:51,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:31:51,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:51" (1/1) ... [2020-09-25 05:31:51,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d9e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:51, skipping insertion in model container [2020-09-25 05:31:51,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:51" (1/1) ... [2020-09-25 05:31:51,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:31:51,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:31:52,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:31:52,198 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:31:52,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:31:52,250 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:31:52,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:52 WrapperNode [2020-09-25 05:31:52,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:31:52,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:31:52,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:31:52,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:31:52,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:52" (1/1) ... [2020-09-25 05:31:52,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:52" (1/1) ... [2020-09-25 05:31:52,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:52" (1/1) ... [2020-09-25 05:31:52,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:52" (1/1) ... [2020-09-25 05:31:52,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:52" (1/1) ... [2020-09-25 05:31:52,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:52" (1/1) ... [2020-09-25 05:31:52,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:52" (1/1) ... [2020-09-25 05:31:52,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:31:52,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:31:52,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:31:52,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:31:52,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:52" (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 05:31:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:31:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:31:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 05:31:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:31:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:31:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:31:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 05:31:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:31:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:31:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:31:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:31:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:31:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:31:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:31:52,800 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:31:52,800 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:31:52,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:52 BoogieIcfgContainer [2020-09-25 05:31:52,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:31:52,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:31:52,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:31:52,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:31:52,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:31:51" (1/3) ... [2020-09-25 05:31:52,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2785d1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:31:52, skipping insertion in model container [2020-09-25 05:31:52,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:52" (2/3) ... [2020-09-25 05:31:52,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2785d1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:31:52, skipping insertion in model container [2020-09-25 05:31:52,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:52" (3/3) ... [2020-09-25 05:31:52,816 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-09-25 05:31:52,829 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:31:52,839 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:31:52,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:31:52,902 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:31:52,902 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:31:52,902 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:31:52,902 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:31:52,902 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:31:52,902 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:31:52,903 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:31:52,903 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:31:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-09-25 05:31:52,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 05:31:52,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:52,939 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] [2020-09-25 05:31:52,939 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash 606292035, now seen corresponding path program 1 times [2020-09-25 05:31:52,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:52,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449267010] [2020-09-25 05:31:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:53,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:53,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:31:53,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:53,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 05:31:53,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:53,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:53,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 05:31:53,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:53,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:31:53,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:53,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:53,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:31:53,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:31:53,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:53,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:53,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:53,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 05:31:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:53,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:53,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:53,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:53,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:31:53,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:53,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:53,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:31:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:53,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:53,436 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 05:31:53,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449267010] [2020-09-25 05:31:53,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:53,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:31:53,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426756516] [2020-09-25 05:31:53,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:31:53,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:53,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:31:53,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:53,472 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-09-25 05:31:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:53,618 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-25 05:31:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:31:53,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-25 05:31:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:53,639 INFO L225 Difference]: With dead ends: 73 [2020-09-25 05:31:53,639 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 05:31:53,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 05:31:53,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 05:31:53,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-25 05:31:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 05:31:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-25 05:31:53,690 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-25 05:31:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:53,691 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-25 05:31:53,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:31:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-25 05:31:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 05:31:53,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:53,693 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] [2020-09-25 05:31:53,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:31:53,694 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:53,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1986388344, now seen corresponding path program 1 times [2020-09-25 05:31:53,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:53,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304834764] [2020-09-25 05:31:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:54,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:54,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:31:54,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:54,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-25 05:31:54,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:54,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:54,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:31:54,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 05:31:54,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:31:54,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:54,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:54,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:31:54,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:31:54,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:54,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:54,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:31:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:54,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:54,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:54,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:54,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:54,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:31:54,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:54,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:31:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:54,409 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 05:31:54,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304834764] [2020-09-25 05:31:54,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:54,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:31:54,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850517066] [2020-09-25 05:31:54,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:31:54,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:54,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:31:54,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:31:54,418 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 8 states. [2020-09-25 05:31:54,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:54,766 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2020-09-25 05:31:54,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:31:54,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 05:31:54,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:54,768 INFO L225 Difference]: With dead ends: 60 [2020-09-25 05:31:54,769 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 05:31:54,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:31:54,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 05:31:54,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-09-25 05:31:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 05:31:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-09-25 05:31:54,780 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2020-09-25 05:31:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:54,781 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-09-25 05:31:54,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:31:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-09-25 05:31:54,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 05:31:54,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:54,783 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:31:54,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:31:54,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:54,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:54,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1471095088, now seen corresponding path program 1 times [2020-09-25 05:31:54,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:54,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9744563] [2020-09-25 05:31:54,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:54,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:55,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:56,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:56,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 05:31:56,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:56,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-09-25 05:31:56,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:56,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:31:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 05:31:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:31:56,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:31:56,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:56,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:56,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:56,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:31:56,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:31:56,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:56,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:56,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:31:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:56,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:56,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:56,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:31:56,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:56,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:31:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:56,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:31:56,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9744563] [2020-09-25 05:31:56,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:31:56,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:31:56,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744066626] [2020-09-25 05:31:56,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:31:56,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:56,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:31:56,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:31:56,325 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 9 states. [2020-09-25 05:31:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:56,676 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-09-25 05:31:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:31:56,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-25 05:31:56,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:56,678 INFO L225 Difference]: With dead ends: 66 [2020-09-25 05:31:56,678 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 05:31:56,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:31:56,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 05:31:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-09-25 05:31:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 05:31:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-09-25 05:31:56,687 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2020-09-25 05:31:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:56,689 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-09-25 05:31:56,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:31:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-09-25 05:31:56,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 05:31:56,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:56,694 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 05:31:56,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:31:56,694 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:56,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:56,695 INFO L82 PathProgramCache]: Analyzing trace with hash -93423064, now seen corresponding path program 2 times [2020-09-25 05:31:56,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:56,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233122921] [2020-09-25 05:31:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:56,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:58,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:58,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 05:31:58,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:58,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-09-25 05:31:58,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:58,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:58,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:31:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 05:31:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:31:58,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:58,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:58,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:31:58,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:31:58,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:58,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:58,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:58,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:58,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:31:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:58,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:58,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:58,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:58,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:31:58,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:58,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:58,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:31:58,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:58,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:31:58,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233122921] [2020-09-25 05:31:58,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:31:58,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:31:58,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958801108] [2020-09-25 05:31:58,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:31:58,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:58,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:31:58,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:31:58,805 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 10 states. [2020-09-25 05:31:59,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:59,176 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-09-25 05:31:59,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:31:59,176 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-09-25 05:31:59,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:59,178 INFO L225 Difference]: With dead ends: 72 [2020-09-25 05:31:59,178 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 05:31:59,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:31:59,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 05:31:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-25 05:31:59,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 05:31:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-09-25 05:31:59,186 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2020-09-25 05:31:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:59,187 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-09-25 05:31:59,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:31:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-09-25 05:31:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:31:59,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:59,188 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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 05:31:59,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:31:59,189 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:59,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:59,189 INFO L82 PathProgramCache]: Analyzing trace with hash 399520640, now seen corresponding path program 3 times [2020-09-25 05:31:59,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:59,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655850536] [2020-09-25 05:31:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:59,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:59,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:01,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:01,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 05:32:01,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:01,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2757 [2020-09-25 05:32:01,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:01,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:01,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:32:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 05:32:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:32:01,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:02,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:02,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:02,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:02,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:02,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:02,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:32:02,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:02,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:02,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:02,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 05:32:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:02,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:02,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:02,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:02,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:32:02,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:02,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:32:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:02,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:02,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655850536] [2020-09-25 05:32:02,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:02,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:32:02,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048255991] [2020-09-25 05:32:02,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:32:02,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:02,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:32:02,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:32:02,150 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 11 states. [2020-09-25 05:32:02,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:02,615 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-09-25 05:32:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:32:02,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-09-25 05:32:02,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:02,617 INFO L225 Difference]: With dead ends: 78 [2020-09-25 05:32:02,617 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 05:32:02,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-09-25 05:32:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 05:32:02,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-09-25 05:32:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 05:32:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-09-25 05:32:02,628 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 54 [2020-09-25 05:32:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:02,629 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-09-25 05:32:02,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:32:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-09-25 05:32:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 05:32:02,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:02,634 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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 05:32:02,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:32:02,637 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:02,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:02,638 INFO L82 PathProgramCache]: Analyzing trace with hash 2020051672, now seen corresponding path program 4 times [2020-09-25 05:32:02,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:02,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242627787] [2020-09-25 05:32:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:06,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:06,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 05:32:06,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3545 [2020-09-25 05:32:06,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:06,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:32:06,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:32:06,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:32:06,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:06,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:06,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:06,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:06,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:06,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:06,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:32:06,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:06,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:06,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:32:06,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 05:32:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:06,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:06,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:06,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:06,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:32:06,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:06,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:32:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:32:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 05:32:06,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242627787] [2020-09-25 05:32:06,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:06,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 05:32:06,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979737538] [2020-09-25 05:32:06,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 05:32:06,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:06,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 05:32:06,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:32:06,625 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 14 states. [2020-09-25 05:32:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:07,161 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-09-25 05:32:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 05:32:07,161 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-09-25 05:32:07,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:07,162 INFO L225 Difference]: With dead ends: 61 [2020-09-25 05:32:07,162 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:32:07,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-25 05:32:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:32:07,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:32:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:32:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:32:07,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2020-09-25 05:32:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:07,165 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:32:07,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 05:32:07,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:32:07,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:32:07,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:32:07,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:32:07,317 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 05:32:07,318 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 05:32:07,318 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:32:07,318 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 05:32:07,318 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:32:07,319 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:32:07,319 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:32:07,319 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:32:07,319 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:32:07,319 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 05:32:07,319 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 05:32:07,319 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 05:32:07,320 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-09-25 05:32:07,320 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 05:32:07,320 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 05:32:07,320 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 05:32:07,320 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 05:32:07,320 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 05:32:07,320 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 05:32:07,320 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 05:32:07,321 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 05:32:07,321 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-09-25 05:32:07,321 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-25 05:32:07,321 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 05:32:07,321 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 05:32:07,321 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-09-25 05:32:07,321 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-25 05:32:07,321 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-25 05:32:07,322 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 05:32:07,322 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 05:32:07,322 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 05:32:07,322 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-09-25 05:32:07,322 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-09-25 05:32:07,322 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 05:32:07,322 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 05:32:07,323 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-09-25 05:32:07,323 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-09-25 05:32:07,323 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-09-25 05:32:07,323 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 05:32:07,323 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-09-25 05:32:07,324 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 05:32:07,324 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 05:32:07,324 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-25 05:32:07,324 INFO L264 CegarLoopResult]: At program point L26-5(lines 26 28) the Hoare annotation is: (let ((.cse0 (+ (* 8 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) |main_~#ad1~0.offset|))) (and (<= main_~pa~0.offset .cse0) (= main_~pa~0.base |main_~#ad1~0.base|) (<= .cse0 main_~pa~0.offset) (<= (+ (* 8 main_~i~0) |main_~#ad1~0.offset|) main_~pa~0.offset) (<= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (<= main_~ad2~0.offset |main_~#ad1~0.offset|))) [2020-09-25 05:32:07,324 INFO L264 CegarLoopResult]: At program point L26-6(lines 26 28) the Hoare annotation is: (let ((.cse0 (+ (* 8 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) |main_~#ad1~0.offset|))) (and (<= main_~pa~0.offset .cse0) (= main_~pa~0.base |main_~#ad1~0.base|) (<= .cse0 main_~pa~0.offset) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= (+ (* 8 main_~i~0) |main_~#ad1~0.offset|) main_~pa~0.offset) (<= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (<= main_~ad2~0.offset |main_~#ad1~0.offset|))) [2020-09-25 05:32:07,325 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-09-25 05:32:07,325 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 05:32:07,325 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-25 05:32:07,325 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-09-25 05:32:07,325 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-25 05:32:07,325 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-09-25 05:32:07,325 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-09-25 05:32:07,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 05:32:07,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 05:32:07,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 05:32:07,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 05:32:07,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:32:07 BoogieIcfgContainer [2020-09-25 05:32:07,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:32:07,358 INFO L168 Benchmark]: Toolchain (without parser) took 15473.41 ms. Allocated memory was 138.9 MB in the beginning and 339.2 MB in the end (delta: 200.3 MB). Free memory was 102.3 MB in the beginning and 133.7 MB in the end (delta: -31.4 MB). Peak memory consumption was 168.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:07,360 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 05:32:07,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.66 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 91.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:07,362 INFO L168 Benchmark]: Boogie Preprocessor took 140.05 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 91.7 MB in the beginning and 178.7 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:07,363 INFO L168 Benchmark]: RCFGBuilder took 412.36 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 161.6 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:07,364 INFO L168 Benchmark]: TraceAbstraction took 14547.63 ms. Allocated memory was 200.8 MB in the beginning and 339.2 MB in the end (delta: 138.4 MB). Free memory was 161.0 MB in the beginning and 133.7 MB in the end (delta: 27.2 MB). Peak memory consumption was 165.6 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:07,368 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 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 363.66 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 91.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.05 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 91.7 MB in the beginning and 178.7 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.36 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 161.6 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14547.63 ms. Allocated memory was 200.8 MB in the beginning and 339.2 MB in the end (delta: 138.4 MB). Free memory was 161.0 MB in the beginning and 133.7 MB in the end (delta: 27.2 MB). Peak memory consumption was 165.6 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 - 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: 36]: 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: 0 - InvariantResult [Line: 26]: Loop Invariant [2020-09-25 05:32:07,378 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 05:32:07,378 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 05:32:07,379 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 05:32:07,379 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((pa <= 8 * unknown-#memory_int-unknown[pa][pa] + ad1 && pa == ad1) && 8 * unknown-#memory_int-unknown[pa][pa] + ad1 <= pa) && 8 * i + ad1 <= pa) && ad1 <= ad2) && ad1 == ad2) && ad2 <= ad1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.2s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 203 SDtfs, 225 SDslu, 645 SDs, 0 SdLazy, 815 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=5, 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, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 112 HoareAnnotationTreeSize, 13 FomulaSimplifications, 162 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 70 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 274 NumberOfCodeBlocks, 274 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 268 ConstructedInterpolants, 0 QuantifiedInterpolants, 86679 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 24/80 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...