/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=1.0 --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 09:11:49,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:11:49,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:11:49,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:11:49,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:11:49,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:11:49,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:11:49,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:11:49,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:11:49,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:11:49,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:11:49,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:11:49,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:11:49,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:11:49,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:11:49,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:11:49,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:11:49,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:11:49,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:11:49,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:11:49,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:11:49,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:11:49,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:11:49,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:11:49,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:11:49,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:11:49,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:11:49,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:11:49,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:11:49,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:11:49,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:11:49,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:11:49,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:11:49,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:11:49,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:11:49,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:11:49,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:11:49,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:11:49,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:11:49,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:11:49,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:11:49,696 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 09:11:49,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:11:49,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:11:49,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:11:49,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:11:49,751 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:11:49,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:11:49,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:11:49,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:11:49,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:11:49,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:11:49,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:11:49,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:11:49,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:11:49,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:11:49,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:11:49,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:11:49,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:11:49,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:11:49,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:11:49,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:11:49,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:11:49,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:11:49,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:11:49,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:11:49,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:11:49,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:11:49,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:11:49,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:11:49,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:11:49,758 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:11:50,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:11:50,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:11:50,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:11:50,291 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:11:50,292 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:11:50,294 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-25 09:11:50,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9f9f26f7/1d2b20564d0b4f26bc7f32cea5a5d3d8/FLAGbe2a5a7e3 [2020-09-25 09:11:50,888 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:11:50,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-25 09:11:50,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9f9f26f7/1d2b20564d0b4f26bc7f32cea5a5d3d8/FLAGbe2a5a7e3 [2020-09-25 09:11:51,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9f9f26f7/1d2b20564d0b4f26bc7f32cea5a5d3d8 [2020-09-25 09:11:51,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:11:51,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:11:51,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:11:51,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:11:51,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:11:51,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:11:51" (1/1) ... [2020-09-25 09:11:51,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b495c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:51, skipping insertion in model container [2020-09-25 09:11:51,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:11:51" (1/1) ... [2020-09-25 09:11:51,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:11:51,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:11:51,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:11:51,515 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:11:51,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:11:51,552 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:11:51,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:51 WrapperNode [2020-09-25 09:11:51,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:11:51,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:11:51,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:11:51,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:11:51,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:51" (1/1) ... [2020-09-25 09:11:51,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:51" (1/1) ... [2020-09-25 09:11:51,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:51" (1/1) ... [2020-09-25 09:11:51,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:51" (1/1) ... [2020-09-25 09:11:51,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:51" (1/1) ... [2020-09-25 09:11:51,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:51" (1/1) ... [2020-09-25 09:11:51,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:51" (1/1) ... [2020-09-25 09:11:51,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:11:51,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:11:51,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:11:51,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:11:51,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:51" (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 09:11:51,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:11:51,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:11:51,758 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 09:11:51,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:11:51,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:11:51,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 09:11:51,759 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 09:11:51,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 09:11:51,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:11:51,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:11:51,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:11:51,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:11:52,014 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:11:52,014 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 09:11:52,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:11:52 BoogieIcfgContainer [2020-09-25 09:11:52,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:11:52,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:11:52,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:11:52,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:11:52,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:11:51" (1/3) ... [2020-09-25 09:11:52,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d729a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:11:52, skipping insertion in model container [2020-09-25 09:11:52,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:51" (2/3) ... [2020-09-25 09:11:52,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d729a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:11:52, skipping insertion in model container [2020-09-25 09:11:52,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:11:52" (3/3) ... [2020-09-25 09:11:52,033 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-09-25 09:11:52,047 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:11:52,059 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:11:52,105 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:11:52,167 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:11:52,167 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:11:52,167 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:11:52,168 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:11:52,168 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:11:52,168 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:11:52,168 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:11:52,168 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:11:52,188 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-25 09:11:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 09:11:52,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:52,197 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 09:11:52,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:52,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:52,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1819653980, now seen corresponding path program 1 times [2020-09-25 09:11:52,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:52,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643759936] [2020-09-25 09:11:52,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:52,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:52,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 09:11:52,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:52,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-25 09:11:52,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:52,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:52,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:11:52,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:11:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:11:52,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:11:53,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:53,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:53,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:11:53,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:11:53,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:53,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:53,100 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 09:11:53,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643759936] [2020-09-25 09:11:53,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:11:53,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 09:11:53,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769221660] [2020-09-25 09:11:53,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:11:53,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:53,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:11:53,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:11:53,134 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 9 states. [2020-09-25 09:11:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:53,583 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-09-25 09:11:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:11:53,586 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-09-25 09:11:53,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:53,600 INFO L225 Difference]: With dead ends: 65 [2020-09-25 09:11:53,600 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 09:11:53,605 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 09:11:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 09:11:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-09-25 09:11:53,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 09:11:53,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-25 09:11:53,657 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2020-09-25 09:11:53,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:53,658 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-25 09:11:53,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:11:53,658 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-25 09:11:53,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 09:11:53,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:53,660 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 09:11:53,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:11:53,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:53,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:53,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1522824151, now seen corresponding path program 1 times [2020-09-25 09:11:53,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:53,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108677655] [2020-09-25 09:11:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:53,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:53,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:54,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:54,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:54,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 09:11:54,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:11:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-09-25 09:11:54,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:54,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:11:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:11:54,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:11:54,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:54,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:54,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:54,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:54,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:11:54,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:54,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:11:54,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:54,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:54,554 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 09:11:54,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108677655] [2020-09-25 09:11:54,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:54,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:11:54,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155312395] [2020-09-25 09:11:54,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:11:54,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:54,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:11:54,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:11:54,561 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 11 states. [2020-09-25 09:11:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:54,858 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-09-25 09:11:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:11:54,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-25 09:11:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:54,860 INFO L225 Difference]: With dead ends: 49 [2020-09-25 09:11:54,860 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 09:11:54,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:11:54,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 09:11:54,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-09-25 09:11:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 09:11:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-25 09:11:54,869 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-25 09:11:54,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:54,870 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-25 09:11:54,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:11:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-25 09:11:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 09:11:54,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:54,872 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 09:11:54,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:11:54,873 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:54,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:54,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1421125650, now seen corresponding path program 2 times [2020-09-25 09:11:54,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:54,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714222927] [2020-09-25 09:11:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:55,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:56,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:56,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 09:11:56,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:11:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1489 [2020-09-25 09:11:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:56,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:11:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:11:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:11:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:56,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:56,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:56,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:56,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:11:56,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:56,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:11:56,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:56,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:56,569 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 09:11:56,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714222927] [2020-09-25 09:11:56,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:56,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 09:11:56,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692170919] [2020-09-25 09:11:56,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 09:11:56,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:56,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 09:11:56,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:11:56,576 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 13 states. [2020-09-25 09:11:56,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:56,867 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-09-25 09:11:56,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:11:56,868 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-09-25 09:11:56,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:56,869 INFO L225 Difference]: With dead ends: 55 [2020-09-25 09:11:56,871 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 09:11:56,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:11:56,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 09:11:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-09-25 09:11:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 09:11:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-09-25 09:11:56,884 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2020-09-25 09:11:56,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:56,885 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-09-25 09:11:56,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 09:11:56,885 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-09-25 09:11:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 09:11:56,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:56,890 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] [2020-09-25 09:11:56,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:11:56,891 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:56,892 INFO L82 PathProgramCache]: Analyzing trace with hash -264078349, now seen corresponding path program 3 times [2020-09-25 09:11:56,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:56,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652242090] [2020-09-25 09:11:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:57,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:57,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:57,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:57,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:57,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 09:11:57,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:11:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-25 09:11:57,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:57,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:57,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 09:11:57,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:11:57,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 09:11:57,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:58,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:58,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:58,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:11:58,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:58,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:11:58,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:58,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:11:58,150 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 09:11:58,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652242090] [2020-09-25 09:11:58,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:58,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 09:11:58,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195438117] [2020-09-25 09:11:58,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 09:11:58,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:58,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 09:11:58,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:11:58,161 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 15 states. [2020-09-25 09:11:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:58,479 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-09-25 09:11:58,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 09:11:58,479 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-09-25 09:11:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:58,482 INFO L225 Difference]: With dead ends: 61 [2020-09-25 09:11:58,482 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 09:11:58,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-09-25 09:11:58,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 09:11:58,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-09-25 09:11:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 09:11:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2020-09-25 09:11:58,490 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 46 [2020-09-25 09:11:58,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:58,490 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2020-09-25 09:11:58,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 09:11:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-09-25 09:11:58,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 09:11:58,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:58,492 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] [2020-09-25 09:11:58,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:11:58,492 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:58,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:58,493 INFO L82 PathProgramCache]: Analyzing trace with hash -926037960, now seen corresponding path program 4 times [2020-09-25 09:11:58,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:58,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696906881] [2020-09-25 09:11:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:58,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:59,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:59,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:59,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 09:11:59,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:11:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1198 [2020-09-25 09:11:59,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:59,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 09:11:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 09:11:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:11:59,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:59,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:59,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:59,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:59,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:11:59,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:59,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:11:59,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:59,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:59,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:59,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:59,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:59,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:11:59,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696906881] [2020-09-25 09:11:59,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:59,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 09:11:59,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52766619] [2020-09-25 09:11:59,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 09:11:59,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:59,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 09:11:59,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:11:59,878 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 15 states. [2020-09-25 09:12:00,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:00,320 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-09-25 09:12:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:12:00,321 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-09-25 09:12:00,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:00,321 INFO L225 Difference]: With dead ends: 53 [2020-09-25 09:12:00,322 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 09:12:00,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2020-09-25 09:12:00,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 09:12:00,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 09:12:00,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 09:12:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 09:12:00,327 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-09-25 09:12:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:00,327 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 09:12:00,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 09:12:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 09:12:00,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 09:12:00,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:12:00,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 09:12:00,460 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 09:12:00,460 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 09:12:00,460 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 09:12:00,460 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 09:12:00,460 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 09:12:00,461 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 09:12:00,461 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 09:12:00,461 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 09:12:00,461 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 09:12:00,461 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 09:12:00,461 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 09:12:00,462 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 09:12:00,462 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 09:12:00,462 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 09:12:00,462 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 09:12:00,462 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-25 09:12:00,462 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 72) no Hoare annotation was computed. [2020-09-25 09:12:00,462 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-25 09:12:00,463 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 09:12:00,464 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-25 09:12:00,465 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 09:12:00,465 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 09:12:00,465 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 09:12:00,465 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 09:12:00,465 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 72) no Hoare annotation was computed. [2020-09-25 09:12:00,466 INFO L264 CegarLoopResult]: At program point L44(lines 31 65) the Hoare annotation is: (or (<= (+ main_~main__x~0 51) main_~main__y~0) (let ((.cse0 (+ main_~main__x~0 4))) (and (<= .cse0 (* 2 main_~main__y~0)) (<= .cse0 (* 3 main_~main__y~0)) (or (<= (+ main_~main__x~0 1) 0) (<= 3 main_~main__y~0)) (<= (+ main_~main__x~0 2) main_~main__y~0)))) [2020-09-25 09:12:00,466 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 09:12:00,466 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 09:12:00,466 INFO L268 CegarLoopResult]: For program point L38(lines 38 64) no Hoare annotation was computed. [2020-09-25 09:12:00,466 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 09:12:00,466 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 09:12:00,467 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 55) no Hoare annotation was computed. [2020-09-25 09:12:00,467 INFO L268 CegarLoopResult]: For program point L30(lines 30 69) no Hoare annotation was computed. [2020-09-25 09:12:00,467 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 09:12:00,467 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-09-25 09:12:00,469 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 09:12:00,470 INFO L268 CegarLoopResult]: For program point L24(lines 24 70) no Hoare annotation was computed. [2020-09-25 09:12:00,470 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-25 09:12:00,470 INFO L268 CegarLoopResult]: For program point L53(lines 53 62) no Hoare annotation was computed. [2020-09-25 09:12:00,470 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 09:12:00,471 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 09:12:00,471 INFO L268 CegarLoopResult]: For program point L18(lines 18 71) no Hoare annotation was computed. [2020-09-25 09:12:00,471 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-25 09:12:00,471 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 09:12:00,471 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 09:12:00,471 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 09:12:00,471 INFO L268 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-09-25 09:12:00,471 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 09:12:00,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:12:00 BoogieIcfgContainer [2020-09-25 09:12:00,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 09:12:00,513 INFO L168 Benchmark]: Toolchain (without parser) took 9267.07 ms. Allocated memory was 146.3 MB in the beginning and 296.7 MB in the end (delta: 150.5 MB). Free memory was 102.7 MB in the beginning and 252.4 MB in the end (delta: -149.8 MB). Peak memory consumption was 720.3 kB. Max. memory is 7.1 GB. [2020-09-25 09:12:00,514 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 09:12:00,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.90 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 09:12:00,525 INFO L168 Benchmark]: Boogie Preprocessor took 127.95 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 92.2 MB in the beginning and 181.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 09:12:00,526 INFO L168 Benchmark]: RCFGBuilder took 338.44 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 166.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-09-25 09:12:00,528 INFO L168 Benchmark]: TraceAbstraction took 8483.76 ms. Allocated memory was 202.9 MB in the beginning and 296.7 MB in the end (delta: 93.8 MB). Free memory was 165.7 MB in the beginning and 252.4 MB in the end (delta: -86.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 7.1 GB. [2020-09-25 09:12:00,536 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.90 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.95 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 92.2 MB in the beginning and 181.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.44 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 166.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8483.76 ms. Allocated memory was 202.9 MB in the beginning and 296.7 MB in the end (delta: 93.8 MB). Free memory was 165.7 MB in the beginning and 252.4 MB in the end (delta: -86.8 MB). Peak memory consumption was 7.1 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 + 51 <= main__y || (((main__x + 4 <= 2 * main__y && main__x + 4 <= 3 * main__y) && (main__x + 1 <= 0 || 3 <= main__y)) && main__x + 2 <= main__y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.1s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 246 SDslu, 518 SDs, 0 SdLazy, 961 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 9 NumberOfFragments, 54 HoareAnnotationTreeSize, 5 FomulaSimplifications, 72 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 35271 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/80 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...