/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:24:19,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:24:19,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:24:19,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:24:19,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:24:19,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:24:19,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:24:19,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:24:19,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:24:19,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:24:19,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:24:19,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:24:19,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:24:19,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:24:19,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:24:19,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:24:19,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:24:19,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:24:19,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:24:19,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:24:19,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:24:19,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:24:19,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:24:19,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:24:19,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:24:19,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:24:19,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:24:19,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:24:19,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:24:19,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:24:19,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:24:19,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:24:19,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:24:19,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:24:19,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:24:19,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:24:19,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:24:19,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:24:19,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:24:19,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:24:19,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:24:19,286 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 11:24:19,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:24:19,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:24:19,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:24:19,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:24:19,330 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:24:19,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:24:19,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:24:19,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:24:19,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:24:19,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:24:19,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:24:19,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:24:19,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:24:19,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:24:19,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:24:19,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:24:19,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:24:19,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:24:19,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:24:19,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:24:19,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:24:19,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:24:19,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:24:19,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:24:19,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:24:19,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:24:19,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:24:19,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:24:19,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:24:19,336 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=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:24:19,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:24:19,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:24:19,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:24:19,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:24:19,800 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:24:19,801 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-09-25 11:24:19,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de8b1d1bb/b68cb5b78368421db0388657415c796c/FLAG353b20c11 [2020-09-25 11:24:20,396 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:24:20,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-09-25 11:24:20,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de8b1d1bb/b68cb5b78368421db0388657415c796c/FLAG353b20c11 [2020-09-25 11:24:20,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de8b1d1bb/b68cb5b78368421db0388657415c796c [2020-09-25 11:24:20,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:24:20,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:24:20,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:24:20,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:24:20,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:24:20,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:24:20" (1/1) ... [2020-09-25 11:24:20,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:20, skipping insertion in model container [2020-09-25 11:24:20,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:24:20" (1/1) ... [2020-09-25 11:24:20,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:24:20,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:24:21,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:24:21,060 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:24:21,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:24:21,089 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:24:21,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:21 WrapperNode [2020-09-25 11:24:21,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:24:21,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:24:21,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:24:21,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:24:21,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:21" (1/1) ... [2020-09-25 11:24:21,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:21" (1/1) ... [2020-09-25 11:24:21,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:21" (1/1) ... [2020-09-25 11:24:21,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:21" (1/1) ... [2020-09-25 11:24:21,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:21" (1/1) ... [2020-09-25 11:24:21,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:21" (1/1) ... [2020-09-25 11:24:21,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:21" (1/1) ... [2020-09-25 11:24:21,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:24:21,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:24:21,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:24:21,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:24:21,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:21" (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 11:24:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:24:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:24:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:24:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:24:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:24:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:24:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:24:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:24:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:24:21,445 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:24:21,445 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:24:21,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:24:21 BoogieIcfgContainer [2020-09-25 11:24:21,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:24:21,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:24:21,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:24:21,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:24:21,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:24:20" (1/3) ... [2020-09-25 11:24:21,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cffb69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:24:21, skipping insertion in model container [2020-09-25 11:24:21,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:21" (2/3) ... [2020-09-25 11:24:21,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cffb69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:24:21, skipping insertion in model container [2020-09-25 11:24:21,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:24:21" (3/3) ... [2020-09-25 11:24:21,460 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2020-09-25 11:24:21,473 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:24:21,483 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:24:21,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:24:21,545 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:24:21,545 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:24:21,545 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:24:21,546 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:24:21,546 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:24:21,546 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:24:21,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:24:21,547 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:24:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-25 11:24:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 11:24:21,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:21,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:21,584 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:21,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:21,592 INFO L82 PathProgramCache]: Analyzing trace with hash -420526341, now seen corresponding path program 1 times [2020-09-25 11:24:21,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:21,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250425279] [2020-09-25 11:24:21,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:22,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:22,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:24:22,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 11:24:22,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:22,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:24:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:24:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:24:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:24:22,723 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-09-25 11:24:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:22,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:22,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:22,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:24:22,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:22,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:22,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:22,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:22,775 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 11:24:22,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250425279] [2020-09-25 11:24:22,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:22,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 11:24:22,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332052755] [2020-09-25 11:24:22,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:24:22,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:22,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:24:22,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:24:22,809 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 10 states. [2020-09-25 11:24:23,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:23,059 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-09-25 11:24:23,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:24:23,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-25 11:24:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:23,072 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:24:23,072 INFO L226 Difference]: Without dead ends: 29 [2020-09-25 11:24:23,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:24:23,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-25 11:24:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-09-25 11:24:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-25 11:24:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-25 11:24:23,125 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 15 [2020-09-25 11:24:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:23,126 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-25 11:24:23,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:24:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-25 11:24:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 11:24:23,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:23,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:23,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:24:23,128 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:23,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:23,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1780540834, now seen corresponding path program 1 times [2020-09-25 11:24:23,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:23,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382813820] [2020-09-25 11:24:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:23,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:24,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:24,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:24:24,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:24,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1801 [2020-09-25 11:24:24,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:24,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:24,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:24:24,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:24:24,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:24:24,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:24:25,574 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 36 [2020-09-25 11:24:25,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:25,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:25,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:25,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:25,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:25,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:24:25,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:25,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:25,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:25,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:24:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:25,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:25,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:25,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:25,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:24:25,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:25,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:25,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:25,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:25,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382813820] [2020-09-25 11:24:25,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:24:25,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:24:25,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089872852] [2020-09-25 11:24:25,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:24:25,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:25,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:24:25,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:24:25,673 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 13 states. [2020-09-25 11:24:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:25,903 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-09-25 11:24:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:24:25,904 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-09-25 11:24:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:25,905 INFO L225 Difference]: With dead ends: 40 [2020-09-25 11:24:25,906 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 11:24:25,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:24:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 11:24:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 11:24:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 11:24:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-09-25 11:24:25,916 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 24 [2020-09-25 11:24:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:25,916 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-09-25 11:24:25,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:24:25,916 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-09-25 11:24:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:24:25,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:25,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:25,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:24:25,918 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:25,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1647717669, now seen corresponding path program 2 times [2020-09-25 11:24:25,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:25,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176302772] [2020-09-25 11:24:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:30,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:30,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:24:30,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:24:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 11:24:30,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:30,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:24:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:24:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:24:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:31,767 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2020-09-25 11:24:31,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:31,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:31,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:31,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:31,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:31,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:24:31,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:31,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:24:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:31,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:31,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:31,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:24:31,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:31,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:31,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:31,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 11:24:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:31,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:31,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:31,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:31,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:24:31,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:31,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:31,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 11:24:31,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176302772] [2020-09-25 11:24:31,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:24:31,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:24:31,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634727266] [2020-09-25 11:24:31,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:24:31,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:31,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:24:31,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:24:31,924 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 16 states. [2020-09-25 11:24:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:32,210 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-09-25 11:24:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:24:32,210 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2020-09-25 11:24:32,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:32,213 INFO L225 Difference]: With dead ends: 49 [2020-09-25 11:24:32,213 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 11:24:32,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:24:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 11:24:32,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-25 11:24:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 11:24:32,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-09-25 11:24:32,234 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 33 [2020-09-25 11:24:32,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:32,234 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-09-25 11:24:32,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:24:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-09-25 11:24:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 11:24:32,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:32,238 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:32,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:24:32,239 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:32,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:32,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1765127618, now seen corresponding path program 3 times [2020-09-25 11:24:32,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:32,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451581022] [2020-09-25 11:24:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:33,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:37,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 11:24:37,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:24:37,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-09-25 11:24:37,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:37,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:24:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:24:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 11:24:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:41,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:41,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:41,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:41,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:41,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:24:41,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:41,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:41,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:41,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:24:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:41,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:41,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:41,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:41,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:24:41,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:41,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:24:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:24:41,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:42,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 11:24:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:42,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:42,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:42,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:42,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:42,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:42,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 11:24:42,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:42,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:42,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:24:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:42,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:42,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:42,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:42,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:42,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:24:42,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:42,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:42,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 7 refuted. 6 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 11:24:42,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451581022] [2020-09-25 11:24:42,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:24:42,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:24:42,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668235478] [2020-09-25 11:24:42,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:24:42,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:42,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:24:42,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=55, Unknown=2, NotChecked=0, Total=72 [2020-09-25 11:24:42,118 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 9 states. [2020-09-25 11:24:54,939 WARN L193 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 42 DAG size of output: 23 [2020-09-25 11:24:57,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:57,083 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-09-25 11:24:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:24:57,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-25 11:24:57,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:57,085 INFO L225 Difference]: With dead ends: 45 [2020-09-25 11:24:57,085 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:24:57,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=24, Invalid=82, Unknown=4, NotChecked=0, Total=110 [2020-09-25 11:24:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:24:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:24:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:24:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:24:57,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-09-25 11:24:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:57,087 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:24:57,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:24:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:24:57,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:24:57,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:24:57,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 11:24:57,285 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 11:24:57,285 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:24:57,285 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:24:57,285 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 11:24:57,286 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 11:24:57,286 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 11:24:57,286 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-09-25 11:24:57,286 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-09-25 11:24:57,286 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= (+ main_~k~0 (* 4294967296 (div (+ main_~i~0 main_~j~0 (* main_~k~0 (- 1)) 4294967295) 4294967296))) (+ main_~i~0 main_~j~0)) (<= (+ (* 2 main_~i~0) (* 4294967296 (div (+ (* main_~i~0 (- 2)) main_~j~0 4294967295) 4294967296))) main_~j~0)) [2020-09-25 11:24:57,288 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 11:24:57,288 INFO L264 CegarLoopResult]: At program point L23-1(lines 19 24) the Hoare annotation is: (and (<= (+ main_~k~0 (* 4294967296 (div (+ main_~i~0 main_~j~0 (* main_~k~0 (- 1)) 4294967295) 4294967296))) (+ main_~i~0 main_~j~0)) (<= (+ (* 2 main_~i~0) (* 4294967296 (div (+ (* main_~i~0 (- 2)) main_~j~0 4294967295) 4294967296))) main_~j~0)) [2020-09-25 11:24:57,288 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 11:24:57,288 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 11:24:57,289 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 11:24:57,289 INFO L268 CegarLoopResult]: For program point L19-2(lines 13 26) no Hoare annotation was computed. [2020-09-25 11:24:57,289 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 11:24:57,289 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 11) the Hoare annotation is: true [2020-09-25 11:24:57,289 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 11) no Hoare annotation was computed. [2020-09-25 11:24:57,289 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 11:24:57,289 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 11:24:57,290 INFO L268 CegarLoopResult]: For program point L7-2(lines 5 11) no Hoare annotation was computed. [2020-09-25 11:24:57,290 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 11:24:57,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:24:57 BoogieIcfgContainer [2020-09-25 11:24:57,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:24:57,332 INFO L168 Benchmark]: Toolchain (without parser) took 36567.39 ms. Allocated memory was 141.6 MB in the beginning and 405.8 MB in the end (delta: 264.2 MB). Free memory was 103.8 MB in the beginning and 126.2 MB in the end (delta: -22.5 MB). Peak memory consumption was 241.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:57,336 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 11:24:57,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.82 ms. Allocated memory is still 141.6 MB. Free memory was 103.1 MB in the beginning and 93.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:57,341 INFO L168 Benchmark]: Boogie Preprocessor took 104.14 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 93.8 MB in the beginning and 184.5 MB in the end (delta: -90.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:57,347 INFO L168 Benchmark]: RCFGBuilder took 255.15 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 172.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:57,348 INFO L168 Benchmark]: TraceAbstraction took 35877.96 ms. Allocated memory was 204.5 MB in the beginning and 405.8 MB in the end (delta: 201.3 MB). Free memory was 172.1 MB in the beginning and 126.2 MB in the end (delta: 45.9 MB). Peak memory consumption was 247.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:57,356 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.82 ms. Allocated memory is still 141.6 MB. Free memory was 103.1 MB in the beginning and 93.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.14 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 93.8 MB in the beginning and 184.5 MB in the end (delta: -90.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 255.15 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 172.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35877.96 ms. Allocated memory was 204.5 MB in the beginning and 405.8 MB in the end (delta: 201.3 MB). Free memory was 172.1 MB in the beginning and 126.2 MB in the end (delta: 45.9 MB). Peak memory consumption was 247.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 19]: Loop Invariant Derived loop invariant: k + 4294967296 * ((i + j + k * -1 + 4294967295) / 4294967296) <= i + j && 2 * i + 4294967296 * ((i * -2 + j + 4294967295) / 4294967296) <= j - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 35.5s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 47 SDslu, 333 SDs, 0 SdLazy, 502 SolverSat, 13 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 14.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 19 NumberOfFragments, 73 HoareAnnotationTreeSize, 11 FomulaSimplifications, 323 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 328 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 64761 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 45/78 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...