/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/diamond_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:45:24,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:45:24,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:45:24,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:45:24,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:45:24,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:45:24,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:45:24,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:45:24,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:45:24,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:45:24,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:45:24,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:45:24,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:45:24,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:45:24,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:45:24,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:45:24,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:45:24,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:45:24,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:45:24,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:45:24,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:45:24,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:45:24,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:45:24,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:45:24,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:45:24,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:45:24,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:45:24,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:45:24,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:45:24,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:45:24,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:45:24,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:45:24,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:45:24,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:45:24,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:45:24,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:45:24,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:45:24,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:45:24,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:45:24,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:45:24,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:45:24,155 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 23:45:24,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:45:24,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:45:24,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:45:24,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:45:24,181 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:45:24,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:45:24,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:45:24,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:45:24,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:45:24,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:45:24,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:45:24,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:45:24,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:45:24,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:45:24,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:45:24,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:45:24,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:45:24,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:45:24,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:45:24,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:45:24,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:45:24,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:45:24,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:45:24,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:45:24,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:45:24,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:45:24,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:45:24,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:45:24,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:45:24,186 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:45:24,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:45:24,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:45:24,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:45:24,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:45:24,555 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:45:24,556 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2020-10-14 23:45:24,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa69beac1/4378da5694294e5ea855384448972695/FLAG4af41790e [2020-10-14 23:45:25,177 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:45:25,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2020-10-14 23:45:25,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa69beac1/4378da5694294e5ea855384448972695/FLAG4af41790e [2020-10-14 23:45:25,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa69beac1/4378da5694294e5ea855384448972695 [2020-10-14 23:45:25,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:45:25,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:45:25,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:45:25,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:45:25,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:45:25,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:45:25" (1/1) ... [2020-10-14 23:45:25,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25, skipping insertion in model container [2020-10-14 23:45:25,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:45:25" (1/1) ... [2020-10-14 23:45:25,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:45:25,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:45:25,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:45:25,794 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:45:25,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:45:25,833 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:45:25,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25 WrapperNode [2020-10-14 23:45:25,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:45:25,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:45:25,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:45:25,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:45:25,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2020-10-14 23:45:25,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2020-10-14 23:45:25,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2020-10-14 23:45:25,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2020-10-14 23:45:25,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2020-10-14 23:45:25,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2020-10-14 23:45:25,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2020-10-14 23:45:25,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:45:25,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:45:25,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:45:25,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:45:25,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (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 23:45:26,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:45:26,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:45:26,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 23:45:26,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:45:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:45:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 23:45:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:45:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:45:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:45:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:45:26,353 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:45:26,354 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:45:26,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:45:26 BoogieIcfgContainer [2020-10-14 23:45:26,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:45:26,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:45:26,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:45:26,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:45:26,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:45:25" (1/3) ... [2020-10-14 23:45:26,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf84ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:45:26, skipping insertion in model container [2020-10-14 23:45:26,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (2/3) ... [2020-10-14 23:45:26,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf84ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:45:26, skipping insertion in model container [2020-10-14 23:45:26,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:45:26" (3/3) ... [2020-10-14 23:45:26,367 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-2.c [2020-10-14 23:45:26,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:45:26,391 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:45:26,408 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:45:26,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:45:26,436 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:45:26,436 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:45:26,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:45:26,437 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:45:26,437 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:45:26,437 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:45:26,437 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:45:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 23:45:26,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:45:26,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:26,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:45:26,466 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:26,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:26,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1906239810, now seen corresponding path program 1 times [2020-10-14 23:45:26,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:26,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128588822] [2020-10-14 23:45:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:26,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:26,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:26,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:45:26,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 23:45:26,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:26,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:26,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:26,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:45:26,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:26,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:45:26,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:26,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:26,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:26,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:45:26,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:45:26,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:26,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:26,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:26,696 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 23:45:26,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128588822] [2020-10-14 23:45:26,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:45:26,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-14 23:45:26,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330079493] [2020-10-14 23:45:26,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-14 23:45:26,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:26,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-14 23:45:26,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 23:45:26,729 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-10-14 23:45:26,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:26,761 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2020-10-14 23:45:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-14 23:45:26,764 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-14 23:45:26,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:26,776 INFO L225 Difference]: With dead ends: 38 [2020-10-14 23:45:26,777 INFO L226 Difference]: Without dead ends: 21 [2020-10-14 23:45:26,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 23:45:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-14 23:45:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-14 23:45:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 23:45:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2020-10-14 23:45:26,839 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2020-10-14 23:45:26,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:26,840 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-10-14 23:45:26,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-14 23:45:26,840 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2020-10-14 23:45:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:45:26,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:26,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:45:26,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:45:26,842 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:26,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:26,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1847134466, now seen corresponding path program 1 times [2020-10-14 23:45:26,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:26,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198908401] [2020-10-14 23:45:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:26,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:27,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:27,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:45:27,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:27,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 23:45:27,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:27,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:27,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:45:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:45:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:45:27,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:45:27,319 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 5 [2020-10-14 23:45:27,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:27,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:27,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:27,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:45:27,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:27,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:45:27,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:27,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:45:27,351 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 23:45:27,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198908401] [2020-10-14 23:45:27,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:45:27,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:45:27,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131811951] [2020-10-14 23:45:27,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:45:27,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:27,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:45:27,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:27,358 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 3 states. [2020-10-14 23:45:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:27,461 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-10-14 23:45:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:45:27,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 23:45:27,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:27,465 INFO L225 Difference]: With dead ends: 28 [2020-10-14 23:45:27,465 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 23:45:27,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:27,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 23:45:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-14 23:45:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 23:45:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2020-10-14 23:45:27,476 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 10 [2020-10-14 23:45:27,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:27,476 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2020-10-14 23:45:27,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:45:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2020-10-14 23:45:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:45:27,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:27,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:45:27,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:45:27,478 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:27,479 INFO L82 PathProgramCache]: Analyzing trace with hash -129940435, now seen corresponding path program 1 times [2020-10-14 23:45:27,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:27,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919029265] [2020-10-14 23:45:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:27,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:27,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:27,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:27,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:27,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:27,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:28,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:45:28,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 23:45:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 681 [2020-10-14 23:45:28,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:28,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:45:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:45:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:45:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:45:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:28,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:28,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:45:28,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:28,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:45:28,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:28,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:45:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:45:28,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919029265] [2020-10-14 23:45:28,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:45:28,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:45:28,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620984760] [2020-10-14 23:45:28,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:45:28,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:28,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:45:28,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:28,457 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand 3 states. [2020-10-14 23:45:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:28,615 INFO L93 Difference]: Finished difference Result 50 states and 81 transitions. [2020-10-14 23:45:28,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:45:28,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 23:45:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:28,618 INFO L225 Difference]: With dead ends: 50 [2020-10-14 23:45:28,618 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 23:45:28,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 23:45:28,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 23:45:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 23:45:28,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-10-14 23:45:28,628 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 21 [2020-10-14 23:45:28,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:28,629 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-10-14 23:45:28,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:45:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-10-14 23:45:28,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:45:28,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:28,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:45:28,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:45:28,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:28,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:28,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1573036973, now seen corresponding path program 1 times [2020-10-14 23:45:28,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:28,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848758645] [2020-10-14 23:45:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:28,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:29,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:29,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:29,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:29,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:29,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:29,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:45:29,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-14 23:45:29,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-14 23:45:29,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:29,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:45:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:45:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:45:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:29,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:29,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:29,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:45:29,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:45:29,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:29,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:29,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:45:29,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848758645] [2020-10-14 23:45:29,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:45:29,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:45:29,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895850405] [2020-10-14 23:45:29,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:45:29,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:29,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:45:29,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:29,423 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 3 states. [2020-10-14 23:45:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:29,506 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-10-14 23:45:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:45:29,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 23:45:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:29,508 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:45:29,508 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 23:45:29,509 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 23:45:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 23:45:29,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-14 23:45:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 23:45:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-14 23:45:29,517 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 21 [2020-10-14 23:45:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:29,517 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-14 23:45:29,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:45:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-14 23:45:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:45:29,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:29,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:45:29,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:45:29,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:29,520 INFO L82 PathProgramCache]: Analyzing trace with hash 263086575, now seen corresponding path program 1 times [2020-10-14 23:45:29,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:29,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455193957] [2020-10-14 23:45:29,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:29,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:29,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:29,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:29,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:45:29,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:45:29,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-14 23:45:29,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:29,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:29,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:45:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:45:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:45:29,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:31,155 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 22 [2020-10-14 23:45:31,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:31,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:31,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:45:31,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:31,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:45:31,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:31,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:31,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:31,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:31,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:31,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:31,226 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 23:45:31,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455193957] [2020-10-14 23:45:31,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:45:31,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:45:31,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643300728] [2020-10-14 23:45:31,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:45:31,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:31,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:45:31,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:45:31,230 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 15 states. [2020-10-14 23:45:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:31,862 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-10-14 23:45:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:45:31,862 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-10-14 23:45:31,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:31,863 INFO L225 Difference]: With dead ends: 48 [2020-10-14 23:45:31,863 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 23:45:31,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:45:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 23:45:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-14 23:45:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 23:45:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-14 23:45:31,869 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 21 [2020-10-14 23:45:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:31,870 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-14 23:45:31,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:45:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-14 23:45:31,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:45:31,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:31,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:45:31,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:45:31,872 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:31,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:31,872 INFO L82 PathProgramCache]: Analyzing trace with hash -345519953, now seen corresponding path program 1 times [2020-10-14 23:45:31,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:31,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450526504] [2020-10-14 23:45:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:32,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:32,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:45:32,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:32,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-14 23:45:32,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:32,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:32,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:45:32,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:45:32,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:45:32,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:34,501 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 4294967296 (div c_main_~y~0 4294967296)))) (or (<= (+ c_main_~y~0 1) .cse0) (let ((.cse16 (div c_main_~y~0 2))) (let ((.cse15 (* .cse16 (- 2))) (.cse9 (* 2 .cse16))) (let ((.cse1 (= c_main_~y~0 .cse9)) (.cse13 (div (+ c_main_~y~0 .cse15) 4294967296)) (.cse14 (div (+ c_main_~y~0 .cse15 (- 2)) 4294967296))) (let ((.cse12 (* 4294967296 .cse14)) (.cse8 (* 4294967296 .cse13)) (.cse10 (< c_main_~y~0 .cse0)) (.cse11 (not .cse1))) (let ((.cse4 (+ c_main_~x~0 1)) (.cse5 (and .cse10 .cse11)) (.cse6 (+ .cse8 .cse9)) (.cse2 (+ .cse9 .cse12 2)) (.cse3 (<= .cse0 c_main_~y~0))) (and (or .cse1 (< .cse2 c_main_~y~0) .cse3) (<= 0 .cse4) (<= .cse4 0) (or .cse5 (< .cse6 c_main_~y~0)) (let ((.cse7 (or .cse1 .cse3))) (or (and (or .cse5 .cse1 .cse3) (or (and (<= c_main_~y~0 .cse6) .cse7) (and (<= c_main_~y~0 (+ .cse8 .cse9 4294967295)) .cse7) (and .cse10 .cse11 (<= c_main_~y~0 (+ .cse12 .cse9 4294967295))) (and .cse10 (<= c_main_~y~0 .cse2) .cse11))) (and (<= (+ .cse13 1) 0) .cse7) (and .cse10 .cse11 (<= (+ .cse14 1) 0)))))))))))) is different from false [2020-10-14 23:45:34,638 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 17 [2020-10-14 23:45:34,790 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 19 [2020-10-14 23:45:46,144 WARN L193 SmtUtils]: Spent 6.71 s on a formula simplification. DAG size of input: 273 DAG size of output: 23 [2020-10-14 23:45:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:46,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:46,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:45:46,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:46,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:45:46,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:46,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:46,192 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 23:45:46,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450526504] [2020-10-14 23:45:46,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:45:46,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:45:46,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499936371] [2020-10-14 23:45:46,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:45:46,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:46,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:45:46,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=89, Unknown=3, NotChecked=18, Total=132 [2020-10-14 23:45:46,196 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 12 states. [2020-10-14 23:45:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:46,585 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-14 23:45:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:45:46,588 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-10-14 23:45:46,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:46,589 INFO L225 Difference]: With dead ends: 39 [2020-10-14 23:45:46,589 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 23:45:46,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=26, Invalid=107, Unknown=3, NotChecked=20, Total=156 [2020-10-14 23:45:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 23:45:46,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 23:45:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 23:45:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-10-14 23:45:46,595 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 21 [2020-10-14 23:45:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:46,596 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-10-14 23:45:46,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:45:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-10-14 23:45:46,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:45:46,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:46,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:45:46,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:45:46,598 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:46,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1858628322, now seen corresponding path program 2 times [2020-10-14 23:45:46,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:46,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997531243] [2020-10-14 23:45:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:46,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:47,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:47,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:45:47,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:47,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-14 23:45:47,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:47,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:45:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:45:47,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:45:47,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:47,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:47,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:47,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:45:47,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:45:47,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:47,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:47,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:45:47,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997531243] [2020-10-14 23:45:47,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:45:47,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:45:47,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595532445] [2020-10-14 23:45:47,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:45:47,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:47,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:45:47,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:45:47,290 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 8 states. [2020-10-14 23:45:47,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:47,371 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-14 23:45:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:45:47,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-14 23:45:47,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:47,372 INFO L225 Difference]: With dead ends: 33 [2020-10-14 23:45:47,373 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:45:47,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:45:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:45:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:45:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:45:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:45:47,374 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-10-14 23:45:47,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:47,375 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:45:47,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:45:47,375 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:45:47,375 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:45:47,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:45:47,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:45:47,550 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 23:45:47,550 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:45:47,550 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:45:47,550 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:45:47,550 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:45:47,551 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:45:47,551 INFO L268 CegarLoopResult]: For program point L31-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 23:45:47,551 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 48) no Hoare annotation was computed. [2020-10-14 23:45:47,551 INFO L268 CegarLoopResult]: For program point L19-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 23:45:47,552 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 45) the Hoare annotation is: (let ((.cse4 (div main_~x~0 2))) (let ((.cse3 (* 2 .cse4)) (.cse5 (div main_~y~0 2))) (let ((.cse1 (* 4294967296 (div (+ main_~y~0 (* .cse5 (- 2))) 4294967296))) (.cse2 (* 2 .cse5)) (.cse0 (= main_~x~0 .cse3))) (or (and (not .cse0) (<= (+ main_~x~0 5) 0) (< (+ .cse1 .cse2) main_~y~0)) (and (<= (+ .cse3 (* 4294967296 (div (+ (* .cse4 (- 2)) main_~x~0) 4294967296)) main_~y~0) (+ main_~x~0 .cse1 .cse2)) .cse0))))) [2020-10-14 23:45:47,552 INFO L268 CegarLoopResult]: For program point L40-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 23:45:47,552 INFO L268 CegarLoopResult]: For program point L28-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 23:45:47,552 INFO L268 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-10-14 23:45:47,552 INFO L268 CegarLoopResult]: For program point L16-2(lines 15 45) no Hoare annotation was computed. [2020-10-14 23:45:47,552 INFO L268 CegarLoopResult]: For program point L37-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 23:45:47,553 INFO L268 CegarLoopResult]: For program point L25-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 23:45:47,553 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 48) no Hoare annotation was computed. [2020-10-14 23:45:47,553 INFO L268 CegarLoopResult]: For program point L34-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 23:45:47,553 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 48) the Hoare annotation is: true [2020-10-14 23:45:47,553 INFO L268 CegarLoopResult]: For program point L22-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 23:45:47,554 INFO L264 CegarLoopResult]: At program point L43-1(lines 15 45) the Hoare annotation is: (let ((.cse0 (div main_~y~0 2))) (or (and (= main_~y~0 (* .cse0 2)) (= main_~x~0 (* (div main_~x~0 2) 2))) (let ((.cse1 (+ main_~x~0 5))) (and (<= 0 .cse1) (<= .cse1 0) (< (+ (* 4294967296 (div (+ main_~y~0 (* .cse0 (- 2))) 4294967296)) (* 2 .cse0)) main_~y~0))) (= main_~x~0 0))) [2020-10-14 23:45:47,554 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-10-14 23:45:47,554 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-10-14 23:45:47,554 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-14 23:45:47,554 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-10-14 23:45:47,555 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-10-14 23:45:47,555 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-10-14 23:45:47,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:45:47 BoogieIcfgContainer [2020-10-14 23:45:47,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:45:47,582 INFO L168 Benchmark]: Toolchain (without parser) took 22060.03 ms. Allocated memory was 146.8 MB in the beginning and 285.7 MB in the end (delta: 138.9 MB). Free memory was 102.8 MB in the beginning and 161.3 MB in the end (delta: -58.5 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:45:47,584 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:45:47,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.89 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 92.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:45:47,585 INFO L168 Benchmark]: Boogie Preprocessor took 133.21 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 92.4 MB in the beginning and 182.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:45:47,586 INFO L168 Benchmark]: RCFGBuilder took 389.51 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 165.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:45:47,587 INFO L168 Benchmark]: TraceAbstraction took 21220.34 ms. Allocated memory was 203.4 MB in the beginning and 285.7 MB in the end (delta: 82.3 MB). Free memory was 165.1 MB in the beginning and 161.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:45:47,591 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.89 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 92.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.21 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 92.4 MB in the beginning and 182.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 389.51 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 165.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21220.34 ms. Allocated memory was 203.4 MB in the beginning and 285.7 MB in the end (delta: 82.3 MB). Free memory was 165.1 MB in the beginning and 161.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 15]: Loop Invariant Derived loop invariant: ((y == y / 2 * 2 && x == x / 2 * 2) || ((0 <= x + 5 && x + 5 <= 0) && 4294967296 * ((y + y / 2 * -2) / 4294967296) + 2 * (y / 2) < y)) || x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.9s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 19 SDslu, 190 SDs, 0 SdLazy, 529 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 133 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 59 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 25731 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 14/17 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...