/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:48:48,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:48:48,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:48:48,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:48:48,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:48:48,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:48:48,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:48:48,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:48:48,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:48:48,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:48:48,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:48:48,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:48:48,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:48:48,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:48:48,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:48:48,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:48:48,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:48:48,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:48:48,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:48:48,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:48:48,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:48:48,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:48:48,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:48:48,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:48:48,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:48:48,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:48:48,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:48:48,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:48:48,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:48:48,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:48:48,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:48:48,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:48:48,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:48:48,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:48:48,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:48:48,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:48:48,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:48:48,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:48:48,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:48:48,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:48:48,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:48:48,159 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 14:48:48,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:48:48,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:48:48,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:48:48,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:48:48,210 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:48:48,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:48:48,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:48:48,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:48:48,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:48:48,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:48:48,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:48:48,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:48:48,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:48:48,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:48:48,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:48:48,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:48:48,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:48:48,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:48:48,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:48:48,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:48:48,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:48:48,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:48:48,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:48:48,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:48:48,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:48:48,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:48:48,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:48:48,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:48:48,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:48:48,217 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:48:48,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:48:48,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:48:48,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:48:48,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:48:48,730 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:48:48,731 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2020-09-25 14:48:48,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee5257329/9ddc9059c0164387a551aca5c9afe0ec/FLAGaaa879e1d [2020-09-25 14:48:49,342 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:48:49,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2020-09-25 14:48:49,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee5257329/9ddc9059c0164387a551aca5c9afe0ec/FLAGaaa879e1d [2020-09-25 14:48:49,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee5257329/9ddc9059c0164387a551aca5c9afe0ec [2020-09-25 14:48:49,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:48:49,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:48:49,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:48:49,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:48:49,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:48:49,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:48:49" (1/1) ... [2020-09-25 14:48:49,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:49, skipping insertion in model container [2020-09-25 14:48:49,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:48:49" (1/1) ... [2020-09-25 14:48:49,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:48:49,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:48:49,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:48:49,975 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:48:49,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:48:50,012 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:48:50,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:50 WrapperNode [2020-09-25 14:48:50,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:48:50,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:48:50,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:48:50,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:48:50,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:50" (1/1) ... [2020-09-25 14:48:50,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:50" (1/1) ... [2020-09-25 14:48:50,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:50" (1/1) ... [2020-09-25 14:48:50,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:50" (1/1) ... [2020-09-25 14:48:50,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:50" (1/1) ... [2020-09-25 14:48:50,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:50" (1/1) ... [2020-09-25 14:48:50,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:50" (1/1) ... [2020-09-25 14:48:50,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:48:50,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:48:50,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:48:50,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:48:50,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:50" (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 14:48:50,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:48:50,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:48:50,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:48:50,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:48:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:48:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:48:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:48:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:48:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:48:50,461 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:48:50,461 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:48:50,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:48:50 BoogieIcfgContainer [2020-09-25 14:48:50,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:48:50,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:48:50,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:48:50,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:48:50,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:48:49" (1/3) ... [2020-09-25 14:48:50,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3913d9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:48:50, skipping insertion in model container [2020-09-25 14:48:50,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:50" (2/3) ... [2020-09-25 14:48:50,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3913d9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:48:50, skipping insertion in model container [2020-09-25 14:48:50,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:48:50" (3/3) ... [2020-09-25 14:48:50,498 INFO L109 eAbstractionObserver]: Analyzing ICFG mono-crafted_12.c [2020-09-25 14:48:50,524 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:48:50,543 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:48:50,561 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:48:50,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:48:50,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:48:50,588 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:48:50,588 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:48:50,588 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:48:50,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:48:50,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:48:50,589 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:48:50,608 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 14:48:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 14:48:50,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:50,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:48:50,616 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:50,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:50,624 INFO L82 PathProgramCache]: Analyzing trace with hash -103545344, now seen corresponding path program 1 times [2020-09-25 14:48:50,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:50,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606435886] [2020-09-25 14:48:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:51,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:51,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:48:51,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:48:51,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 14:48:51,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:51,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:48:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:48:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:48:51,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:48:53,193 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse10 (div c_main_~z~0 2))) (let ((.cse2 (+ .cse10 1))) (and (let ((.cse6 (* 2 .cse10))) (let ((.cse8 (= c_main_~z~0 .cse6)) (.cse9 (* 4294967296 (div c_main_~z~0 4294967296))) (.cse7 (* .cse10 (- 2)))) (let ((.cse1 (div (+ c_main_~z~0 .cse7) 4294967296)) (.cse0 (or .cse8 (<= .cse9 c_main_~z~0))) (.cse3 (< c_main_~z~0 .cse9)) (.cse4 (not .cse8)) (.cse5 (div (+ c_main_~z~0 .cse7 (- 2)) 4294967296))) (or (and .cse0 (<= (+ .cse1 1) 0)) (<= .cse2 0) (<= c_main_~z~0 0) (and .cse3 .cse4 (<= (+ .cse5 1) 0)) (and (<= c_main_~z~0 (+ .cse6 (* 4294967296 .cse1))) .cse0) (and .cse3 .cse4 (<= c_main_~z~0 (+ (* 4294967296 .cse5) .cse6 2))))))) (or (< 0 .cse2) (<= 0 c_main_~z~0))))) is different from true [2020-09-25 14:48:53,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:53,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:53,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:53,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:53,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:53,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:53,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:53,236 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 14:48:53,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606435886] [2020-09-25 14:48:53,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:48:53,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:48:53,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223177879] [2020-09-25 14:48:53,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:48:53,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:53,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:48:53,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2020-09-25 14:48:53,264 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 14:48:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:53,334 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-09-25 14:48:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:48:53,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-25 14:48:53,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:53,347 INFO L225 Difference]: With dead ends: 38 [2020-09-25 14:48:53,347 INFO L226 Difference]: Without dead ends: 19 [2020-09-25 14:48:53,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2020-09-25 14:48:53,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-25 14:48:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-09-25 14:48:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-25 14:48:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-09-25 14:48:53,397 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2020-09-25 14:48:53,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:53,398 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-09-25 14:48:53,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:48:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-09-25 14:48:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 14:48:53,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:53,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:48:53,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:48:53,400 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:53,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:53,400 INFO L82 PathProgramCache]: Analyzing trace with hash -116474638, now seen corresponding path program 1 times [2020-09-25 14:48:53,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:53,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258141922] [2020-09-25 14:48:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:53,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:53,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:53,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:48:53,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:48:53,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-25 14:48:53,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:53,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:53,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:48:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:48:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 14:48:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:48:53,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:53,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:53,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:53,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:48:53,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:53,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:53,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:53,898 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 14:48:53,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258141922] [2020-09-25 14:48:53,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:48:53,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:48:53,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72090884] [2020-09-25 14:48:53,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:48:53,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:53,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:48:53,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:48:53,902 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-09-25 14:48:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:53,980 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-09-25 14:48:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:48:53,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-25 14:48:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:53,982 INFO L225 Difference]: With dead ends: 33 [2020-09-25 14:48:53,982 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 14:48:53,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:48:53,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 14:48:53,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-09-25 14:48:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-25 14:48:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-09-25 14:48:53,990 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2020-09-25 14:48:53,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:53,991 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-09-25 14:48:53,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:48:53,991 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-09-25 14:48:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 14:48:53,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:53,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:48:53,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:48:53,993 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:53,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:53,993 INFO L82 PathProgramCache]: Analyzing trace with hash -992023844, now seen corresponding path program 1 times [2020-09-25 14:48:53,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:53,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391428834] [2020-09-25 14:48:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:54,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:54,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:54,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:48:54,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:48:54,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 14:48:54,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:54,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:48:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:48:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:48:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:56,719 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2020-09-25 14:48:56,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:56,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:56,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:56,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:56,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:48:56,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:56,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:48:56,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391428834] [2020-09-25 14:48:56,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:48:56,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:48:56,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971628692] [2020-09-25 14:48:56,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:48:56,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:56,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:48:56,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:48:56,757 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-09-25 14:48:56,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:56,794 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-09-25 14:48:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:48:56,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 14:48:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:56,797 INFO L225 Difference]: With dead ends: 20 [2020-09-25 14:48:56,797 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:48:56,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:48:56,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:48:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:48:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:48:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:48:56,799 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-25 14:48:56,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:56,800 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:48:56,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:48:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:48:56,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:48:56,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:48:56,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 14:48:56,883 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 14:48:56,883 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:48:56,883 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:48:56,884 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 14:48:56,884 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 14:48:56,884 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:48:56,884 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 15) no Hoare annotation was computed. [2020-09-25 14:48:56,884 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 14:48:56,885 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 15) no Hoare annotation was computed. [2020-09-25 14:48:56,885 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 14:48:56,885 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-25 14:48:56,885 INFO L268 CegarLoopResult]: For program point L9(lines 9 10) no Hoare annotation was computed. [2020-09-25 14:48:56,885 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 14:48:56,885 INFO L268 CegarLoopResult]: For program point L9-2(lines 9 10) no Hoare annotation was computed. [2020-09-25 14:48:56,886 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 15) the Hoare annotation is: true [2020-09-25 14:48:56,886 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 14:48:56,886 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 14:48:56,887 INFO L264 CegarLoopResult]: At program point L8-2(lines 8 12) the Hoare annotation is: (and (<= main_~z~0 (let ((.cse0 (div main_~z~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ main_~z~0 (* .cse0 (- 2))) 4294967296))))) (<= 0 main_~z~0)) [2020-09-25 14:48:56,887 INFO L264 CegarLoopResult]: At program point L8-3(lines 8 12) the Hoare annotation is: (and (<= main_~z~0 (let ((.cse0 (div main_~z~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ main_~z~0 (* .cse0 (- 2))) 4294967296))))) (<= 0 main_~z~0)) [2020-09-25 14:48:56,887 INFO L268 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2020-09-25 14:48:56,887 INFO L268 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2020-09-25 14:48:56,887 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2020-09-25 14:48:56,888 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2020-09-25 14:48:56,888 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2020-09-25 14:48:56,888 INFO L268 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2020-09-25 14:48:56,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:48:56 BoogieIcfgContainer [2020-09-25 14:48:56,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:48:56,934 INFO L168 Benchmark]: Toolchain (without parser) took 7251.85 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 105.1 MB in the beginning and 154.3 MB in the end (delta: -49.2 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:48:56,936 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 14:48:56,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.45 ms. Allocated memory is still 141.0 MB. Free memory was 104.5 MB in the beginning and 95.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:48:56,939 INFO L168 Benchmark]: Boogie Preprocessor took 122.90 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 95.0 MB in the beginning and 183.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:48:56,942 INFO L168 Benchmark]: RCFGBuilder took 329.72 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 171.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:48:56,947 INFO L168 Benchmark]: TraceAbstraction took 6445.21 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 171.2 MB in the beginning and 154.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:48:56,957 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.45 ms. Allocated memory is still 141.0 MB. Free memory was 104.5 MB in the beginning and 95.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.90 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 95.0 MB in the beginning and 183.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.72 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 171.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6445.21 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 171.2 MB in the beginning and 154.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 8]: Loop Invariant Derived loop invariant: z <= 2 * (z / 2) + 4294967296 * ((z + z / 2 * -2) / 4294967296) && 0 <= z - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 10 SDslu, 103 SDs, 0 SdLazy, 26 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 51 HoareAnnotationTreeSize, 9 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 6908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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...