/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:40:16,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:40:16,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:40:16,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:40:16,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:40:16,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:40:16,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:40:16,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:40:16,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:40:16,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:40:16,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:40:16,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:40:16,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:40:16,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:40:16,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:40:16,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:40:16,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:40:16,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:40:16,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:40:16,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:40:16,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:40:16,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:40:16,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:40:16,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:40:16,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:40:16,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:40:16,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:40:16,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:40:16,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:40:16,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:40:16,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:40:16,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:40:16,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:40:16,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:40:16,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:40:16,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:40:16,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:40:16,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:40:16,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:40:16,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:40:16,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:40:16,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:40:16,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:40:16,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:40:16,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:40:16,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:40:16,174 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:40:16,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:40:16,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:40:16,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:40:16,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:40:16,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:40:16,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:40:16,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:40:16,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:40:16,177 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:40:16,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:40:16,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:40:16,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:40:16,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:40:16,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:40:16,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:40:16,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:40:16,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:40:16,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:40:16,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:40:16,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:40:16,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:40:16,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:40:16,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:40:16,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:40:16,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:40:16,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:40:16,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:40:16,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:40:16,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:40:16,652 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:40:16,653 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 13:40:16,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e0ab07b2/d8f29927e0dc4603bec238905c84977a/FLAG19f73d3fe [2020-09-25 13:40:17,209 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:40:17,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 13:40:17,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e0ab07b2/d8f29927e0dc4603bec238905c84977a/FLAG19f73d3fe [2020-09-25 13:40:17,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e0ab07b2/d8f29927e0dc4603bec238905c84977a [2020-09-25 13:40:17,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:40:17,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:40:17,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:40:17,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:40:17,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:40:17,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:40:17" (1/1) ... [2020-09-25 13:40:17,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c28f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:17, skipping insertion in model container [2020-09-25 13:40:17,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:40:17" (1/1) ... [2020-09-25 13:40:17,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:40:17,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:40:17,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:40:17,836 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:40:17,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:40:17,870 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:40:17,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:17 WrapperNode [2020-09-25 13:40:17,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:40:17,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:40:17,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:40:17,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:40:17,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:17" (1/1) ... [2020-09-25 13:40:17,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:17" (1/1) ... [2020-09-25 13:40:17,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:17" (1/1) ... [2020-09-25 13:40:17,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:17" (1/1) ... [2020-09-25 13:40:17,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:17" (1/1) ... [2020-09-25 13:40:17,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:17" (1/1) ... [2020-09-25 13:40:17,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:17" (1/1) ... [2020-09-25 13:40:17,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:40:17,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:40:17,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:40:17,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:40:17,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:40:18,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:40:18,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:40:18,053 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 13:40:18,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:40:18,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:40:18,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:40:18,054 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:40:18,054 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 13:40:18,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:40:18,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:40:18,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:40:18,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:40:18,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:40:18,377 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:40:18,377 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 13:40:18,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:40:18 BoogieIcfgContainer [2020-09-25 13:40:18,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:40:18,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:40:18,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:40:18,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:40:18,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:40:17" (1/3) ... [2020-09-25 13:40:18,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426325d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:40:18, skipping insertion in model container [2020-09-25 13:40:18,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:17" (2/3) ... [2020-09-25 13:40:18,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426325d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:40:18, skipping insertion in model container [2020-09-25 13:40:18,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:40:18" (3/3) ... [2020-09-25 13:40:18,390 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-09-25 13:40:18,399 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:40:18,408 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:40:18,426 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:40:18,456 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:40:18,456 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:40:18,456 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:40:18,457 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:40:18,457 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:40:18,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:40:18,457 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:40:18,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:40:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-09-25 13:40:18,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 13:40:18,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:18,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:18,488 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:18,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:18,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-09-25 13:40:18,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:18,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999731278] [2020-09-25 13:40:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:40:18,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 13:40:18,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:40:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:40:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:40:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:40:18,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:18,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:18,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:18,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:18,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999731278] [2020-09-25 13:40:18,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:18,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:40:18,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210589073] [2020-09-25 13:40:18,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:40:18,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:19,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:40:19,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:40:19,020 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-09-25 13:40:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:19,146 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-09-25 13:40:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:40:19,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 13:40:19,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:19,160 INFO L225 Difference]: With dead ends: 89 [2020-09-25 13:40:19,160 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 13:40:19,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:40:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 13:40:19,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 13:40:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 13:40:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-25 13:40:19,213 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-09-25 13:40:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:19,213 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-25 13:40:19,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:40:19,214 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-25 13:40:19,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 13:40:19,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:19,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:19,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:40:19,216 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:19,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:19,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-09-25 13:40:19,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:19,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080553158] [2020-09-25 13:40:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:40:19,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 13:40:19,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:40:19,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:40:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:40:19,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:19,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:19,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:19,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:19,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080553158] [2020-09-25 13:40:19,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:19,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:40:19,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596400249] [2020-09-25 13:40:19,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:40:19,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:19,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:40:19,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:40:19,439 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-09-25 13:40:19,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:19,618 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-09-25 13:40:19,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:40:19,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 13:40:19,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:19,620 INFO L225 Difference]: With dead ends: 90 [2020-09-25 13:40:19,623 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 13:40:19,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:40:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 13:40:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-09-25 13:40:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 13:40:19,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-09-25 13:40:19,658 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-09-25 13:40:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:19,658 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-09-25 13:40:19,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:40:19,659 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-09-25 13:40:19,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 13:40:19,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:19,661 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:19,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:40:19,661 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:19,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:19,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-09-25 13:40:19,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:19,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090153850] [2020-09-25 13:40:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 13:40:19,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 13:40:19,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:40:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:40:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:40:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:19,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:19,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:19,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:19,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:19,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:40:19,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:19,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:19,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090153850] [2020-09-25 13:40:19,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:19,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:40:19,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098015250] [2020-09-25 13:40:19,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:40:19,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:19,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:40:19,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:40:19,839 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-09-25 13:40:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:19,908 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-09-25 13:40:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:40:19,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-25 13:40:19,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:19,912 INFO L225 Difference]: With dead ends: 90 [2020-09-25 13:40:19,913 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 13:40:19,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:40:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 13:40:19,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 13:40:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 13:40:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-25 13:40:19,930 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2020-09-25 13:40:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:19,931 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-25 13:40:19,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:40:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-25 13:40:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:40:19,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:19,934 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:19,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:40:19,935 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:19,935 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-09-25 13:40:19,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:19,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483947470] [2020-09-25 13:40:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:20,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:20,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:20,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 13:40:20,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:20,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-09-25 13:40:20,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:20,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:20,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:40:20,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:40:20,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:40:20,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:40:20,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:20,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:20,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:20,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:20,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:20,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:20,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 13:40:20,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:40:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:20,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:20,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:20,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:20,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:40:20,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:20,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:20,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483947470] [2020-09-25 13:40:20,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:20,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:40:20,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499904516] [2020-09-25 13:40:20,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:40:20,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:20,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:40:20,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:40:20,613 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 8 states. [2020-09-25 13:40:20,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:20,925 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2020-09-25 13:40:20,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:40:20,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-25 13:40:20,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:20,941 INFO L225 Difference]: With dead ends: 146 [2020-09-25 13:40:20,941 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 13:40:20,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:40:20,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 13:40:20,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2020-09-25 13:40:20,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 13:40:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-09-25 13:40:20,967 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 38 [2020-09-25 13:40:20,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:20,967 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-09-25 13:40:20,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:40:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-09-25 13:40:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:40:20,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:20,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:20,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:40:20,970 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:20,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:20,971 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-09-25 13:40:20,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:20,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852959489] [2020-09-25 13:40:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:20,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:40:21,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:40:21,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-25 13:40:21,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:40:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:40:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:40:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:22,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:22,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:22,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:22,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:22,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:22,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:22,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:22,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:22,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:22,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852959489] [2020-09-25 13:40:22,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:22,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:40:22,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733134798] [2020-09-25 13:40:22,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:40:22,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:22,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:40:22,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:40:22,059 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 8 states. [2020-09-25 13:40:22,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:22,311 INFO L93 Difference]: Finished difference Result 166 states and 199 transitions. [2020-09-25 13:40:22,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:40:22,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-25 13:40:22,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:22,314 INFO L225 Difference]: With dead ends: 166 [2020-09-25 13:40:22,314 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 13:40:22,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:40:22,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 13:40:22,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 124. [2020-09-25 13:40:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-25 13:40:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2020-09-25 13:40:22,330 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 38 [2020-09-25 13:40:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:22,331 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2020-09-25 13:40:22,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:40:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2020-09-25 13:40:22,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 13:40:22,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:22,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:22,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:40:22,334 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:22,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:22,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2102022651, now seen corresponding path program 1 times [2020-09-25 13:40:22,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:22,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111006599] [2020-09-25 13:40:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:22,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 13:40:24,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:40:24,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1772 [2020-09-25 13:40:24,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:40:24,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 13:40:24,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:40:24,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:24,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:24,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:24,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:24,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:24,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 13:40:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:24,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:24,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:40:24,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:40:24,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:24,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:24,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111006599] [2020-09-25 13:40:24,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:24,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:40:24,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546826639] [2020-09-25 13:40:24,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:40:24,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:24,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:40:24,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:40:24,176 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand 6 states. [2020-09-25 13:40:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:24,262 INFO L93 Difference]: Finished difference Result 198 states and 237 transitions. [2020-09-25 13:40:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:40:24,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-09-25 13:40:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:24,264 INFO L225 Difference]: With dead ends: 198 [2020-09-25 13:40:24,265 INFO L226 Difference]: Without dead ends: 125 [2020-09-25 13:40:24,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:40:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-25 13:40:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-25 13:40:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 13:40:24,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-09-25 13:40:24,278 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 41 [2020-09-25 13:40:24,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:24,278 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-09-25 13:40:24,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:40:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-09-25 13:40:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 13:40:24,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:24,281 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:24,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:40:24,281 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:24,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1446982975, now seen corresponding path program 2 times [2020-09-25 13:40:24,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:24,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839596578] [2020-09-25 13:40:24,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:26,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 13:40:26,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:40:26,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2008 [2020-09-25 13:40:26,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:26,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:40:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:40:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:40:26,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:26,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:26,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:26,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:26,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:26,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:26,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:26,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:40:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:26,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:26,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:26,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:26,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:26,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:40:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:26,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:26,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:26,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:40:26,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:26,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:26,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:40:26,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839596578] [2020-09-25 13:40:26,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:26,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:40:26,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430697506] [2020-09-25 13:40:26,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:40:26,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:26,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:40:26,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:40:26,439 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 10 states. [2020-09-25 13:40:26,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:26,788 INFO L93 Difference]: Finished difference Result 179 states and 211 transitions. [2020-09-25 13:40:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:40:26,789 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-09-25 13:40:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:26,791 INFO L225 Difference]: With dead ends: 179 [2020-09-25 13:40:26,791 INFO L226 Difference]: Without dead ends: 177 [2020-09-25 13:40:26,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:40:26,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-25 13:40:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 115. [2020-09-25 13:40:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 13:40:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 134 transitions. [2020-09-25 13:40:26,804 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 134 transitions. Word has length 47 [2020-09-25 13:40:26,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:26,805 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 134 transitions. [2020-09-25 13:40:26,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:40:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 134 transitions. [2020-09-25 13:40:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 13:40:26,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:26,807 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:26,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:40:26,808 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:26,808 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-09-25 13:40:26,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:26,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807636679] [2020-09-25 13:40:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 13:40:29,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:40:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2508 [2020-09-25 13:40:29,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:40:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 13:40:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:40:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:29,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:29,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:40:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:29,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:29,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:29,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 13:40:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:29,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:29,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:29,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:40:29,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807636679] [2020-09-25 13:40:29,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:29,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:40:29,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556220250] [2020-09-25 13:40:29,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:40:29,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:29,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:40:29,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:40:29,432 INFO L87 Difference]: Start difference. First operand 115 states and 134 transitions. Second operand 7 states. [2020-09-25 13:40:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:29,521 INFO L93 Difference]: Finished difference Result 121 states and 139 transitions. [2020-09-25 13:40:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:40:29,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 13:40:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:29,523 INFO L225 Difference]: With dead ends: 121 [2020-09-25 13:40:29,523 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 13:40:29,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:40:29,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 13:40:29,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 85. [2020-09-25 13:40:29,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 13:40:29,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2020-09-25 13:40:29,536 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 50 [2020-09-25 13:40:29,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:29,536 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2020-09-25 13:40:29,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:40:29,537 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2020-09-25 13:40:29,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 13:40:29,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:29,542 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:29,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:40:29,542 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:29,542 INFO L82 PathProgramCache]: Analyzing trace with hash 2033926999, now seen corresponding path program 1 times [2020-09-25 13:40:29,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:29,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058224267] [2020-09-25 13:40:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 13:40:30,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:30,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 778 [2020-09-25 13:40:30,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:40:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:40:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 13:40:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:30,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:30,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:30,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:40:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:30,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:30,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:30,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:30,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:30,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:30,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:30,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:30,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 13:40:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:30,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:30,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 13:40:30,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058224267] [2020-09-25 13:40:30,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:30,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 13:40:30,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021922411] [2020-09-25 13:40:30,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:40:30,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:30,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:40:30,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:40:30,521 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand 10 states. [2020-09-25 13:40:30,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:30,874 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2020-09-25 13:40:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:40:30,874 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-09-25 13:40:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:30,875 INFO L225 Difference]: With dead ends: 103 [2020-09-25 13:40:30,875 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:40:30,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:40:30,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:40:30,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:40:30,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:40:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:40:30,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-09-25 13:40:30,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:30,879 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:40:30,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:40:30,879 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:40:30,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:40:30,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:40:30,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:40:31,426 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 13:40:31,426 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:40:31,427 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:40:31,427 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 13:40:31,427 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 13:40:31,427 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 13:40:31,427 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:40:31,427 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:40:31,427 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 13:40:31,428 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 13:40:31,428 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:40:31,428 INFO L268 CegarLoopResult]: For program point L31(lines 23 33) no Hoare annotation was computed. [2020-09-25 13:40:31,428 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 37) no Hoare annotation was computed. [2020-09-25 13:40:31,428 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 13:40:31,428 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 13:40:31,429 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 13:40:31,429 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1))) [2020-09-25 13:40:31,429 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 13:40:31,429 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 13:40:31,429 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 13:40:31,430 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 13:40:31,430 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 32) no Hoare annotation was computed. [2020-09-25 13:40:31,430 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 13:40:31,430 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-25 13:40:31,430 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 13:40:31,430 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 13:40:31,430 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 13:40:31,430 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 13:40:31,431 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-25 13:40:31,431 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-25 13:40:31,431 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse1 (<= (+ main_~j~0 1) main_~n~0))) (or (let ((.cse0 (* main_~i~0 2))) (and (= .cse0 main_~k~0) .cse1 (= .cse0 main_~j~0))) (let ((.cse2 (* 2 main_~i~0))) (and (<= .cse2 main_~j~0) .cse1 (<= (+ .cse2 1) main_~k~0) (<= main_~k~0 main_~n~0))))) [2020-09-25 13:40:31,431 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 13:40:31,431 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 13:40:31,431 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 37) no Hoare annotation was computed. [2020-09-25 13:40:31,432 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-25 13:40:31,432 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-09-25 13:40:31,432 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-25 13:40:31,432 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse4 (* main_~i~0 2)) (.cse1 (+ (* 2 main_~i~0) 1))) (let ((.cse2 (<= (+ main_~j~0 1) main_~n~0)) (.cse0 (<= (+ main_~k~0 1) main_~n~0)) (.cse3 (<= .cse1 main_~k~0)) (.cse5 (= .cse4 main_~j~0))) (or (and .cse0 (<= .cse1 main_~j~0) .cse2 .cse3) (and (= .cse4 main_~k~0) .cse2 .cse5) (and .cse0 .cse3 .cse5)))) [2020-09-25 13:40:31,433 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 27) no Hoare annotation was computed. [2020-09-25 13:40:31,433 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 34) no Hoare annotation was computed. [2020-09-25 13:40:31,433 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 13:40:31,433 INFO L268 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-09-25 13:40:31,433 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 13:40:31,433 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2020-09-25 13:40:31,434 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-09-25 13:40:31,434 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 13:40:31,434 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 13:40:31,434 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 13:40:31,434 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-09-25 13:40:31,434 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 13:40:31,435 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 13:40:31,435 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 13:40:31,435 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 13:40:31,435 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 13:40:31,435 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 13:40:31,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:40:31 BoogieIcfgContainer [2020-09-25 13:40:31,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:40:31,463 INFO L168 Benchmark]: Toolchain (without parser) took 13881.60 ms. Allocated memory was 141.0 MB in the beginning and 317.2 MB in the end (delta: 176.2 MB). Free memory was 105.1 MB in the beginning and 230.8 MB in the end (delta: -125.7 MB). Peak memory consumption was 182.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:31,463 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 13:40:31,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.75 ms. Allocated memory is still 141.0 MB. Free memory was 104.5 MB in the beginning and 94.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:31,465 INFO L168 Benchmark]: Boogie Preprocessor took 109.24 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 94.5 MB in the beginning and 182.9 MB in the end (delta: -88.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:31,466 INFO L168 Benchmark]: RCFGBuilder took 401.47 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 165.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:31,467 INFO L168 Benchmark]: TraceAbstraction took 13075.69 ms. Allocated memory was 202.9 MB in the beginning and 317.2 MB in the end (delta: 114.3 MB). Free memory was 165.1 MB in the beginning and 230.8 MB in the end (delta: -65.7 MB). Peak memory consumption was 180.8 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:31,470 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.75 ms. Allocated memory is still 141.0 MB. Free memory was 104.5 MB in the beginning and 94.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.24 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 94.5 MB in the beginning and 182.9 MB in the end (delta: -88.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.47 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 165.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13075.69 ms. Allocated memory was 202.9 MB in the beginning and 317.2 MB in the end (delta: 114.3 MB). Free memory was 165.1 MB in the beginning and 230.8 MB in the end (delta: -65.7 MB). Peak memory consumption was 180.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n <= k && k <= n - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((n <= k && k <= n) && i * 2 == j) || ((2 * i + 1 <= j && n <= k) && k <= n) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((i * 2 == k && j + 1 <= n) && i * 2 == j) || (((2 * i <= j && j + 1 <= n) && 2 * i + 1 <= k) && k <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.4s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 532 SDtfs, 300 SDslu, 2099 SDs, 0 SdLazy, 1143 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 220 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 33 PreInvPairs, 53 NumberOfFragments, 212 HoareAnnotationTreeSize, 33 FomulaSimplifications, 6202 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 12 FomulaSimplificationsInter, 259 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 348 ConstructedInterpolants, 0 QuantifiedInterpolants, 36234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 53/69 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...