/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:16:17,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:16:17,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:16:17,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:16:17,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:16:17,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:16:17,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:16:17,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:16:17,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:16:17,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:16:17,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:16:17,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:16:17,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:16:17,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:16:17,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:16:17,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:16:17,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:16:17,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:16:17,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:16:17,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:16:17,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:16:17,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:16:17,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:16:17,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:16:17,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:16:17,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:16:17,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:16:17,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:16:17,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:16:17,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:16:17,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:16:17,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:16:17,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:16:17,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:16:17,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:16:17,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:16:17,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:16:17,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:16:17,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:16:17,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:16:17,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:16:17,583 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 [2020-10-14 05:16:17,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:16:17,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:16:17,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:16:17,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:16:17,606 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:16:17,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:16:17,607 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:16:17,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:16:17,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:16:17,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:16:17,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:16:17,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:16:17,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:16:17,608 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:16:17,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:16:17,608 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:16:17,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:16:17,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:16:17,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:16:17,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:16:17,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:16:17,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:16:17,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:16:17,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:16:17,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:16:17,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:16:17,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:16:17,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:16:17,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:16:17,611 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:16:17,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:16:17,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:16:17,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:16:17,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:16:17,946 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:16:17,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_1-2.c [2020-10-14 05:16:18,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b51054f9/190df83c7f7e4bc2ae1775a861132b3d/FLAGf6493df23 [2020-10-14 05:16:18,403 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:16:18,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/underapprox_1-2.c [2020-10-14 05:16:18,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b51054f9/190df83c7f7e4bc2ae1775a861132b3d/FLAGf6493df23 [2020-10-14 05:16:18,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b51054f9/190df83c7f7e4bc2ae1775a861132b3d [2020-10-14 05:16:18,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:16:18,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:16:18,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:16:18,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:16:18,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:16:18,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:16:18" (1/1) ... [2020-10-14 05:16:18,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24cf129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:16:18, skipping insertion in model container [2020-10-14 05:16:18,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:16:18" (1/1) ... [2020-10-14 05:16:18,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:16:18,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:16:18,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:16:18,988 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:16:19,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:16:19,016 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:16:19,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:16:19 WrapperNode [2020-10-14 05:16:19,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:16:19,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:16:19,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:16:19,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:16:19,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:16:19" (1/1) ... [2020-10-14 05:16:19,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:16:19" (1/1) ... [2020-10-14 05:16:19,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:16:19" (1/1) ... [2020-10-14 05:16:19,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:16:19" (1/1) ... [2020-10-14 05:16:19,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:16:19" (1/1) ... [2020-10-14 05:16:19,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:16:19" (1/1) ... [2020-10-14 05:16:19,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:16:19" (1/1) ... [2020-10-14 05:16:19,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:16:19,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:16:19,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:16:19,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:16:19,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:16:19" (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 [2020-10-14 05:16:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:16:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:16:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:16:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:16:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:16:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:16:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:16:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:16:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:16:19,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:16:19,363 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:16:19,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:16:19 BoogieIcfgContainer [2020-10-14 05:16:19,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:16:19,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:16:19,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:16:19,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:16:19,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:16:18" (1/3) ... [2020-10-14 05:16:19,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c13e9f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:16:19, skipping insertion in model container [2020-10-14 05:16:19,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:16:19" (2/3) ... [2020-10-14 05:16:19,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c13e9f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:16:19, skipping insertion in model container [2020-10-14 05:16:19,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:16:19" (3/3) ... [2020-10-14 05:16:19,375 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_1-2.c [2020-10-14 05:16:19,385 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:16:19,392 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:16:19,405 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:16:19,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:16:19,431 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:16:19,431 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:16:19,432 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:16:19,432 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:16:19,432 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:16:19,432 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:16:19,432 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:16:19,450 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-10-14 05:16:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:16:19,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:19,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:19,456 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:19,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:19,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-10-14 05:16:19,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:19,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279384404] [2020-10-14 05:16:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:19,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:19,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:19,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:16:19,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-14 05:16:19,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:19,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:19,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:16:19,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:16:19,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:16:19,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:16:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:19,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:19,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:19,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:16:19,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:19,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:16:19,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:19,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:19,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:19,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:19,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:19,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:16:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:16:19,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279384404] [2020-10-14 05:16:19,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:16:19,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:16:19,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190272318] [2020-10-14 05:16:19,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:16:19,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:19,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:16:19,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:16:19,988 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-10-14 05:16:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:20,075 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-10-14 05:16:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:16:20,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 05:16:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:20,089 INFO L225 Difference]: With dead ends: 29 [2020-10-14 05:16:20,089 INFO L226 Difference]: Without dead ends: 12 [2020-10-14 05:16:20,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:16:20,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-14 05:16:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-14 05:16:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-14 05:16:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-14 05:16:20,134 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-10-14 05:16:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:20,134 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-14 05:16:20,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:16:20,135 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-14 05:16:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 05:16:20,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:20,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:20,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:16:20,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:20,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2020-10-14 05:16:20,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:20,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475977975] [2020-10-14 05:16:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:20,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:20,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:20,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:20,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:16:20,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:20,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 05:16:20,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:20,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:16:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:16:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:16:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:16:20,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:20,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:20,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:16:20,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:20,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:16:20,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:20,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:16:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:16:20,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475977975] [2020-10-14 05:16:20,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:20,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 05:16:20,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873593032] [2020-10-14 05:16:20,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:16:20,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:20,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:16:20,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:16:20,527 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-10-14 05:16:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:20,554 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-14 05:16:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:16:20,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-14 05:16:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:20,557 INFO L225 Difference]: With dead ends: 18 [2020-10-14 05:16:20,557 INFO L226 Difference]: Without dead ends: 13 [2020-10-14 05:16:20,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:16:20,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-14 05:16:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-14 05:16:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-14 05:16:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-14 05:16:20,565 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-10-14 05:16:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:20,566 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-14 05:16:20,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:16:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-14 05:16:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 05:16:20,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:20,568 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:20,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:16:20,568 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:20,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:20,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2020-10-14 05:16:20,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:20,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111340300] [2020-10-14 05:16:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:20,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:20,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:16:20,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:20,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 05:16:20,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:20,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:16:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:16:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:16:20,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:16:20,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:20,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:20,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:20,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:16:20,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:20,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:16:20,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:20,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:16:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:16:20,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111340300] [2020-10-14 05:16:20,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:20,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:16:20,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045297526] [2020-10-14 05:16:20,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:16:20,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:20,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:16:20,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:16:20,896 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-10-14 05:16:20,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:20,930 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-14 05:16:20,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:16:20,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-14 05:16:20,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:20,931 INFO L225 Difference]: With dead ends: 19 [2020-10-14 05:16:20,931 INFO L226 Difference]: Without dead ends: 14 [2020-10-14 05:16:20,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:16:20,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-14 05:16:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-14 05:16:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-14 05:16:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-14 05:16:20,937 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-14 05:16:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:20,940 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-14 05:16:20,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:16:20,940 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-14 05:16:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 05:16:20,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:20,941 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:20,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:16:20,942 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:20,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:20,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1004266255, now seen corresponding path program 3 times [2020-10-14 05:16:20,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:20,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794396620] [2020-10-14 05:16:20,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:20,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:21,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:21,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:16:21,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:21,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 05:16:21,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:21,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:16:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:16:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:16:21,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:16:23,256 WARN L838 $PredicateComparison]: unable to prove that (<= 1431655764 (+ (* 1431655765 c_main_~y~0) (* 2147483648 (div (+ (* c_main_~y~0 (- 1431655765)) 1431655764) 2147483648)))) is different from false [2020-10-14 05:16:23,607 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 18 [2020-10-14 05:16:23,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:23,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:23,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:16:23,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:23,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:23,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:23,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:23,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:16:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2020-10-14 05:16:23,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794396620] [2020-10-14 05:16:23,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:23,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:16:23,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577328897] [2020-10-14 05:16:23,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:16:23,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:23,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:16:23,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2020-10-14 05:16:23,637 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2020-10-14 05:16:25,701 WARN L838 $PredicateComparison]: unable to prove that (and (<= (+ (* 715827883 c_main_~y~0) 715827882) (* 1073741824 (div (+ (* c_main_~y~0 715827883) 715827882) 1073741824))) (not (= (let ((.cse2 (div c_main_~y~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ c_main_~y~0 .cse1) 3))) (+ (* 4294967296 (div (+ c_main_~y~0 (* .cse0 (- 3)) .cse1) 4294967296)) (* 3 .cse0) (* 4294967296 .cse2))))) c_main_~y~0))) is different from false [2020-10-14 05:16:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:27,836 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-14 05:16:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:16:27,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-14 05:16:27,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:27,839 INFO L225 Difference]: With dead ends: 20 [2020-10-14 05:16:27,839 INFO L226 Difference]: Without dead ends: 15 [2020-10-14 05:16:27,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=20, Invalid=42, Unknown=2, NotChecked=26, Total=90 [2020-10-14 05:16:27,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-14 05:16:27,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-14 05:16:27,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-14 05:16:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-14 05:16:27,845 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-10-14 05:16:27,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:27,846 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-14 05:16:27,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:16:27,846 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-14 05:16:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 05:16:27,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:27,847 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:27,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:16:27,847 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:27,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1031021570, now seen corresponding path program 4 times [2020-10-14 05:16:27,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:27,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465015766] [2020-10-14 05:16:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:27,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:27,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:27,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:16:28,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:28,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 05:16:28,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:28,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:16:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:16:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:16:28,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:16:28,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:28,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:28,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:16:28,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:28,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:28,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:28,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:16:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:16:28,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465015766] [2020-10-14 05:16:28,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:28,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:16:28,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701456040] [2020-10-14 05:16:28,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:16:28,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:28,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:16:28,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:16:28,201 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2020-10-14 05:16:28,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:28,266 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-14 05:16:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:16:28,267 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-10-14 05:16:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:28,267 INFO L225 Difference]: With dead ends: 21 [2020-10-14 05:16:28,268 INFO L226 Difference]: Without dead ends: 16 [2020-10-14 05:16:28,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:16:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-14 05:16:28,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-14 05:16:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-14 05:16:28,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-14 05:16:28,273 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-10-14 05:16:28,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:28,274 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-14 05:16:28,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:16:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-14 05:16:28,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 05:16:28,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:28,275 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:28,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:16:28,275 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:28,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:28,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1860436335, now seen corresponding path program 5 times [2020-10-14 05:16:28,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:28,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219230336] [2020-10-14 05:16:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:28,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:28,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:28,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:16:28,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:28,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 05:16:28,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:28,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:28,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:16:28,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:16:28,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:16:28,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:16:28,875 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 26 [2020-10-14 05:16:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:28,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:28,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:16:28,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:28,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:28,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:28,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:28,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:16:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:16:28,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219230336] [2020-10-14 05:16:28,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:28,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:16:28,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146746751] [2020-10-14 05:16:28,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:16:28,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:28,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:16:28,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:16:28,959 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2020-10-14 05:16:29,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:29,124 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-14 05:16:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:16:29,126 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-14 05:16:29,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:29,127 INFO L225 Difference]: With dead ends: 22 [2020-10-14 05:16:29,127 INFO L226 Difference]: Without dead ends: 17 [2020-10-14 05:16:29,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:16:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-14 05:16:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-14 05:16:29,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-14 05:16:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-14 05:16:29,134 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-10-14 05:16:29,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:29,134 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-14 05:16:29,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:16:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-14 05:16:29,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 05:16:29,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:29,135 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:29,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:16:29,136 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:29,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:29,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1802490274, now seen corresponding path program 6 times [2020-10-14 05:16:29,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:29,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814664725] [2020-10-14 05:16:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:29,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:29,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:29,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:16:29,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:29,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 05:16:29,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:29,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:16:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:16:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:16:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:29,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:29,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:29,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:16:29,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:29,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:29,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:29,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:16:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:16:29,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814664725] [2020-10-14 05:16:29,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:29,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:16:29,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288165682] [2020-10-14 05:16:29,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:16:29,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:29,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:16:29,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:16:29,496 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 11 states. [2020-10-14 05:16:31,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:31,706 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-14 05:16:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:16:31,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-10-14 05:16:31,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:31,708 INFO L225 Difference]: With dead ends: 23 [2020-10-14 05:16:31,708 INFO L226 Difference]: Without dead ends: 18 [2020-10-14 05:16:31,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:16:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-14 05:16:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-14 05:16:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-14 05:16:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-14 05:16:31,718 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2020-10-14 05:16:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:31,718 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-14 05:16:31,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:16:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-14 05:16:31,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 05:16:31,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:31,721 INFO L422 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:31,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:16:31,722 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:31,722 INFO L82 PathProgramCache]: Analyzing trace with hash -6162383, now seen corresponding path program 7 times [2020-10-14 05:16:31,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:31,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053942702] [2020-10-14 05:16:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:31,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:31,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:16:31,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 05:16:31,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:31,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:16:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:16:31,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:16:31,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:32,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:32,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:32,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:16:32,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:32,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:16:32,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:32,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:32,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:16:32,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053942702] [2020-10-14 05:16:32,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:32,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:16:32,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971975158] [2020-10-14 05:16:32,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:16:32,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:32,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:16:32,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:16:32,030 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2020-10-14 05:16:32,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:32,179 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-14 05:16:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:16:32,180 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-14 05:16:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:32,181 INFO L225 Difference]: With dead ends: 18 [2020-10-14 05:16:32,181 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:16:32,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:16:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:16:32,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:16:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:16:32,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:16:32,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-14 05:16:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:32,184 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:16:32,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:16:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:16:32,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:16:32,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:16:32,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:16:35,882 WARN L193 SmtUtils]: Spent 3.57 s on a formula simplification. DAG size of input: 175 DAG size of output: 101 [2020-10-14 05:16:35,907 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 05:16:35,907 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:16:35,908 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:16:35,908 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:16:35,908 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:16:35,908 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:16:35,908 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2020-10-14 05:16:35,908 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2020-10-14 05:16:35,908 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2020-10-14 05:16:35,909 INFO L264 CegarLoopResult]: At program point L14-2(lines 14 17) the Hoare annotation is: (let ((.cse4 (div main_~y~0 4294967296)) (.cse5 (div main_~x~0 4294967296))) (let ((.cse0 (* 4294967296 .cse5)) (.cse1 (* main_~y~0 178956971)) (.cse6 (* 2 main_~y~0)) (.cse2 (<= main_~x~0 (+ (* 4294967296 (div (+ main_~x~0 (- 4)) 4294967296)) 6))) (.cse3 (div (+ main_~y~0 (* .cse4 (- 4294967296))) 3))) (or (and (<= (+ .cse0 3) main_~x~0) (<= main_~y~0 8) (<= (+ main_~y~0 1) (* 3 (div (+ .cse1 178956968) 536870912)))) (and .cse2 (<= (+ .cse0 6) main_~x~0) (not (= main_~y~0 (+ (* .cse3 3) (* .cse4 4294967296))))) (and (<= main_~y~0 4) (<= (+ .cse0 2) main_~x~0) (< 0 (+ .cse5 1)) (<= 4 main_~y~0) (<= main_~x~0 2)) (and (<= 1 main_~x~0) (<= main_~x~0 1) (<= main_~y~0 2) (<= (+ .cse6 2) (* 3 (div (+ .cse1 178956970) 268435456)))) (and (<= 0 main_~x~0) (<= main_~x~0 0) (<= 1 main_~y~0) (<= main_~y~0 1)) (and .cse2 (<= main_~x~0 (+ (* 4294967296 (div (+ main_~x~0 (- 5)) 4294967296)) 7)) (<= main_~y~0 32) (<= 1 (+ (* 3 (div (+ (* main_~y~0 (- 1431655765)) 715827872) 2147483648)) .cse6))) (and .cse2 (<= .cse4 0) (<= .cse3 5) (<= (+ main_~y~0 2) (* 3 (div (+ (* main_~y~0 715827883) 1431655760) 2147483648))))))) [2020-10-14 05:16:35,909 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 17) the Hoare annotation is: (not (= (let ((.cse2 (div main_~y~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~y~0 .cse1) 3))) (+ (* (div (+ main_~y~0 (* .cse0 (- 3)) .cse1) 4294967296) 4294967296) (* .cse0 3) (* .cse2 4294967296))))) main_~y~0)) [2020-10-14 05:16:35,909 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-10-14 05:16:35,909 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-10-14 05:16:35,909 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-14 05:16:35,909 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-10-14 05:16:35,910 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-14 05:16:35,910 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-10-14 05:16:35,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:16:35 BoogieIcfgContainer [2020-10-14 05:16:35,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:16:35,932 INFO L168 Benchmark]: Toolchain (without parser) took 17138.75 ms. Allocated memory was 146.8 MB in the beginning and 266.3 MB in the end (delta: 119.5 MB). Free memory was 103.2 MB in the beginning and 195.6 MB in the end (delta: -92.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-10-14 05:16:35,933 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 05:16:35,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.39 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 93.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:16:35,934 INFO L168 Benchmark]: Boogie Preprocessor took 118.36 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.6 MB in the beginning and 181.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:16:35,935 INFO L168 Benchmark]: RCFGBuilder took 231.15 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 170.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:16:35,936 INFO L168 Benchmark]: TraceAbstraction took 16560.99 ms. Allocated memory was 202.9 MB in the beginning and 266.3 MB in the end (delta: 63.4 MB). Free memory was 169.3 MB in the beginning and 195.6 MB in the end (delta: -26.3 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2020-10-14 05:16:35,940 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 223.39 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 93.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.36 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.6 MB in the beginning and 181.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 231.15 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 170.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16560.99 ms. Allocated memory was 202.9 MB in the beginning and 266.3 MB in the end (delta: 63.4 MB). Free memory was 169.3 MB in the beginning and 195.6 MB in the end (delta: -26.3 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: (((((((4294967296 * (x / 4294967296) + 3 <= x && y <= 8) && y + 1 <= 3 * ((y * 178956971 + 178956968) / 536870912)) || ((x <= 4294967296 * ((x + -4) / 4294967296) + 6 && 4294967296 * (x / 4294967296) + 6 <= x) && !(y == (y + y / 4294967296 * -4294967296) / 3 * 3 + y / 4294967296 * 4294967296))) || ((((y <= 4 && 4294967296 * (x / 4294967296) + 2 <= x) && 0 < x / 4294967296 + 1) && 4 <= y) && x <= 2)) || (((1 <= x && x <= 1) && y <= 2) && 2 * y + 2 <= 3 * ((y * 178956971 + 178956970) / 268435456))) || (((0 <= x && x <= 0) && 1 <= y) && y <= 1)) || (((x <= 4294967296 * ((x + -4) / 4294967296) + 6 && x <= 4294967296 * ((x + -5) / 4294967296) + 7) && y <= 32) && 1 <= 3 * ((y * -1431655765 + 715827872) / 2147483648) + 2 * y)) || (((x <= 4294967296 * ((x + -4) / 4294967296) + 6 && y / 4294967296 <= 0) && (y + y / 4294967296 * -4294967296) / 3 <= 5) && y + 2 <= 3 * ((y * 715827883 + 1431655760) / 2147483648)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.7s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 4 SDslu, 296 SDs, 0 SdLazy, 219 SolverSat, 15 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=7, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 14 PreInvPairs, 25 NumberOfFragments, 261 HoareAnnotationTreeSize, 14 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 401 FormulaSimplificationTreeSizeReductionInter, 3.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 10262 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 25/84 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...