/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/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:44:55,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:44:55,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:44:55,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:44:55,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:44:55,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:44:55,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:44:55,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:44:55,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:44:55,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:44:55,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:44:55,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:44:55,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:44:55,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:44:55,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:44:55,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:44:55,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:44:55,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:44:55,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:44:55,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:44:55,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:44:55,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:44:55,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:44:55,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:44:55,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:44:55,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:44:55,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:44:55,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:44:55,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:44:55,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:44:55,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:44:55,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:44:55,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:44:55,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:44:55,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:44:55,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:44:55,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:44:55,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:44:55,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:44:55,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:44:55,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:44:55,400 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 05:44:55,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:44:55,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:44:55,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:44:55,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:44:55,428 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:44:55,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:44:55,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:44:55,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:44:55,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:44:55,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:44:55,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:44:55,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:44:55,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:44:55,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:44:55,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:44:55,430 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:44:55,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:44:55,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:44:55,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:44:55,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:44:55,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:44:55,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:44:55,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:44:55,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:44:55,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:44:55,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:44:55,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:44:55,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:44:55,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:44:55,433 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 05:44:55,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:44:55,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:44:55,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:44:55,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:44:55,912 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:44:55,913 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-25 05:44:55,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/381289b53/6072b92ede8f46dda6cdc595ddb477cc/FLAG8dd4772f0 [2020-09-25 05:44:56,494 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:44:56,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-25 05:44:56,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/381289b53/6072b92ede8f46dda6cdc595ddb477cc/FLAG8dd4772f0 [2020-09-25 05:44:56,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/381289b53/6072b92ede8f46dda6cdc595ddb477cc [2020-09-25 05:44:56,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:44:56,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:44:56,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:44:56,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:44:56,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:44:56,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:44:56" (1/1) ... [2020-09-25 05:44:56,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3155a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:56, skipping insertion in model container [2020-09-25 05:44:56,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:44:56" (1/1) ... [2020-09-25 05:44:56,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:44:56,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:44:57,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:44:57,185 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:44:57,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:44:57,220 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:44:57,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:57 WrapperNode [2020-09-25 05:44:57,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:44:57,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:44:57,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:44:57,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:44:57,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:57" (1/1) ... [2020-09-25 05:44:57,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:57" (1/1) ... [2020-09-25 05:44:57,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:57" (1/1) ... [2020-09-25 05:44:57,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:57" (1/1) ... [2020-09-25 05:44:57,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:57" (1/1) ... [2020-09-25 05:44:57,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:57" (1/1) ... [2020-09-25 05:44:57,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:57" (1/1) ... [2020-09-25 05:44:57,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:44:57,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:44:57,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:44:57,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:44:57,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:44:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:44:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:44:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 05:44:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:44:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:44:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:44:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 05:44:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:44:57,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:44:57,398 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:44:57,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:44:57,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:44:57,657 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:44:57,657 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:44:57,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:44:57 BoogieIcfgContainer [2020-09-25 05:44:57,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:44:57,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:44:57,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:44:57,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:44:57,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:44:56" (1/3) ... [2020-09-25 05:44:57,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f53a608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:44:57, skipping insertion in model container [2020-09-25 05:44:57,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:57" (2/3) ... [2020-09-25 05:44:57,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f53a608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:44:57, skipping insertion in model container [2020-09-25 05:44:57,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:44:57" (3/3) ... [2020-09-25 05:44:57,673 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-09-25 05:44:57,685 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:44:57,695 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:44:57,718 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:44:57,760 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:44:57,760 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:44:57,760 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:44:57,760 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:44:57,760 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:44:57,761 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:44:57,761 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:44:57,761 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:44:57,783 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-25 05:44:57,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 05:44:57,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:57,794 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] [2020-09-25 05:44:57,794 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:57,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1819653980, now seen corresponding path program 1 times [2020-09-25 05:44:57,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:57,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578627938] [2020-09-25 05:44:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:58,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 05:44:58,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:44:58,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-25 05:44:58,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:58,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:44:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:44:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:44:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:44:58,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:58,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:58,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:44:58,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:44:58,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:58,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:58,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:58,658 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 05:44:58,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578627938] [2020-09-25 05:44:58,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:58,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 05:44:58,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33615547] [2020-09-25 05:44:58,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:44:58,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:58,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:44:58,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:44:58,689 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 9 states. [2020-09-25 05:44:59,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:59,054 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-09-25 05:44:59,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:44:59,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-09-25 05:44:59,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:59,080 INFO L225 Difference]: With dead ends: 65 [2020-09-25 05:44:59,080 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 05:44:59,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:44:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 05:44:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-09-25 05:44:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 05:44:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-25 05:44:59,133 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2020-09-25 05:44:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:59,134 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-25 05:44:59,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:44:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-25 05:44:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 05:44:59,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:59,136 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] [2020-09-25 05:44:59,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:44:59,136 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:59,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1522824151, now seen corresponding path program 1 times [2020-09-25 05:44:59,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:59,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737266476] [2020-09-25 05:44:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:59,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:59,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:59,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 05:44:59,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:44:59,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-09-25 05:44:59,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:59,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:44:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:44:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:44:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:45:00,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:45:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:00,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:00,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:00,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:00,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:45:00,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:00,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:00,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:00,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:00,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:00,021 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 05:45:00,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737266476] [2020-09-25 05:45:00,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:45:00,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:45:00,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187560440] [2020-09-25 05:45:00,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:45:00,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:45:00,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:45:00,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:45:00,025 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 11 states. [2020-09-25 05:45:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:45:00,268 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-09-25 05:45:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:45:00,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-25 05:45:00,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:45:00,270 INFO L225 Difference]: With dead ends: 49 [2020-09-25 05:45:00,271 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 05:45:00,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:45:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 05:45:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-09-25 05:45:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 05:45:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-25 05:45:00,279 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-25 05:45:00,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:45:00,280 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-25 05:45:00,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:45:00,280 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-25 05:45:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 05:45:00,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:45:00,282 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] [2020-09-25 05:45:00,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:45:00,283 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:45:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:45:00,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1421125650, now seen corresponding path program 2 times [2020-09-25 05:45:00,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:45:00,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145141022] [2020-09-25 05:45:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:45:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:00,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:00,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:01,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:01,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:45:01,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:45:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-09-25 05:45:01,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:01,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:45:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 05:45:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:45:01,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:45:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:01,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:01,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:01,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:01,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:45:01,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:01,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:01,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:45:01,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145141022] [2020-09-25 05:45:01,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:45:01,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:45:01,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662683783] [2020-09-25 05:45:01,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:45:01,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:45:01,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:45:01,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:45:01,871 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-09-25 05:45:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:45:02,209 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-09-25 05:45:02,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:45:02,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 05:45:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:45:02,211 INFO L225 Difference]: With dead ends: 41 [2020-09-25 05:45:02,211 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:45:02,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:45:02,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:45:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:45:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:45:02,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:45:02,215 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-09-25 05:45:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:45:02,215 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:45:02,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:45:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:45:02,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:45:02,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:45:02,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:45:02,301 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:45:02,301 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 05:45:02,301 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 05:45:02,302 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-09-25 05:45:02,302 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:45:02,302 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:45:02,302 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:45:02,302 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:45:02,302 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:45:02,303 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 05:45:02,303 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 05:45:02,303 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 05:45:02,303 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 05:45:02,303 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 05:45:02,303 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 05:45:02,304 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-25 05:45:02,304 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 72) no Hoare annotation was computed. [2020-09-25 05:45:02,304 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-25 05:45:02,304 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 05:45:02,304 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-25 05:45:02,304 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 05:45:02,305 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 05:45:02,305 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 05:45:02,305 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 05:45:02,305 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 72) no Hoare annotation was computed. [2020-09-25 05:45:02,305 INFO L264 CegarLoopResult]: At program point L44(lines 31 65) the Hoare annotation is: (or (and (<= (+ main_~main__x~0 4) (* 2 main_~main__y~0)) (<= (+ main_~main__x~0 2) main_~main__y~0)) (<= (+ main_~main__x~0 51) main_~main__y~0)) [2020-09-25 05:45:02,305 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 05:45:02,306 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 05:45:02,306 INFO L268 CegarLoopResult]: For program point L38(lines 38 64) no Hoare annotation was computed. [2020-09-25 05:45:02,306 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 05:45:02,306 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 05:45:02,306 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 55) no Hoare annotation was computed. [2020-09-25 05:45:02,307 INFO L268 CegarLoopResult]: For program point L30(lines 30 69) no Hoare annotation was computed. [2020-09-25 05:45:02,307 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-09-25 05:45:02,307 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-09-25 05:45:02,307 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 05:45:02,307 INFO L268 CegarLoopResult]: For program point L24(lines 24 70) no Hoare annotation was computed. [2020-09-25 05:45:02,307 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-25 05:45:02,308 INFO L268 CegarLoopResult]: For program point L53(lines 53 62) no Hoare annotation was computed. [2020-09-25 05:45:02,308 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 05:45:02,308 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 05:45:02,308 INFO L268 CegarLoopResult]: For program point L18(lines 18 71) no Hoare annotation was computed. [2020-09-25 05:45:02,308 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-25 05:45:02,309 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 05:45:02,309 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 05:45:02,309 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 05:45:02,309 INFO L268 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-09-25 05:45:02,309 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 05:45:02,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:45:02 BoogieIcfgContainer [2020-09-25 05:45:02,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:45:02,335 INFO L168 Benchmark]: Toolchain (without parser) took 5461.43 ms. Allocated memory was 138.9 MB in the beginning and 248.0 MB in the end (delta: 109.1 MB). Free memory was 102.5 MB in the beginning and 185.6 MB in the end (delta: -83.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:02,336 INFO L168 Benchmark]: CDTParser took 0.18 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 05:45:02,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.43 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 91.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:02,338 INFO L168 Benchmark]: Boogie Preprocessor took 101.27 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.8 MB in the beginning and 180.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:02,339 INFO L168 Benchmark]: RCFGBuilder took 340.62 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 165.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:02,340 INFO L168 Benchmark]: TraceAbstraction took 4666.69 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 164.8 MB in the beginning and 185.6 MB in the end (delta: -20.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:02,345 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 343.43 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 91.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.27 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.8 MB in the beginning and 180.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.62 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 165.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4666.69 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 164.8 MB in the beginning and 185.6 MB in the end (delta: -20.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: 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: 31]: Loop Invariant Derived loop invariant: (main__x + 4 <= 2 * main__y && main__x + 2 <= main__y) || main__x + 51 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 148 SDslu, 254 SDs, 0 SdLazy, 431 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 38 HoareAnnotationTreeSize, 5 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 11781 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/12 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...