/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:24:43,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:24:43,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:24:44,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:24:44,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:24:44,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:24:44,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:24:44,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:24:44,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:24:44,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:24:44,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:24:44,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:24:44,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:24:44,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:24:44,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:24:44,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:24:44,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:24:44,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:24:44,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:24:44,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:24:44,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:24:44,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:24:44,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:24:44,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:24:44,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:24:44,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:24:44,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:24:44,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:24:44,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:24:44,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:24:44,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:24:44,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:24:44,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:24:44,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:24:44,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:24:44,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:24:44,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:24:44,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:24:44,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:24:44,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:24:44,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:24:44,088 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 [2020-09-24 18:24:44,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:24:44,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:24:44,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:24:44,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:24:44,121 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:24:44,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:24:44,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:24:44,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:24:44,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:24:44,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:24:44,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:24:44,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:24:44,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:24:44,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:24:44,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:24:44,126 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:24:44,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:24:44,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:24:44,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:24:44,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:24:44,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:24:44,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:24:44,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:24:44,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:24:44,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:24:44,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:24:44,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:24:44,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:24:44,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:24:44,129 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:24:44,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:24:44,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:24:44,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:24:44,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:24:44,583 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:24:44,584 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-24 18:24:44,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92e8cc6df/d21228875f07483e946eb61da65b88f3/FLAG58b547c34 [2020-09-24 18:24:45,368 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:24:45,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-24 18:24:45,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92e8cc6df/d21228875f07483e946eb61da65b88f3/FLAG58b547c34 [2020-09-24 18:24:45,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92e8cc6df/d21228875f07483e946eb61da65b88f3 [2020-09-24 18:24:45,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:24:45,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:24:45,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:45,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:24:45,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:24:45,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:45" (1/1) ... [2020-09-24 18:24:45,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3705ef2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:45, skipping insertion in model container [2020-09-24 18:24:45,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:45" (1/1) ... [2020-09-24 18:24:45,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:24:45,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:24:46,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:46,227 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:24:46,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:46,365 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:24:46,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46 WrapperNode [2020-09-24 18:24:46,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:46,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:24:46,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:24:46,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:24:46,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:24:46,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:24:46,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:24:46,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:24:46,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (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 [2020-09-24 18:24:46,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:24:46,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:24:46,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:24:46,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:24:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:24:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:24:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:24:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:24:46,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:24:46,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:24:46,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:24:48,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:24:48,202 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:24:48,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:48 BoogieIcfgContainer [2020-09-24 18:24:48,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:24:48,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:24:48,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:24:48,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:24:48,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:45" (1/3) ... [2020-09-24 18:24:48,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31398288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:48, skipping insertion in model container [2020-09-24 18:24:48,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (2/3) ... [2020-09-24 18:24:48,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31398288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:48, skipping insertion in model container [2020-09-24 18:24:48,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:48" (3/3) ... [2020-09-24 18:24:48,221 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label22.c [2020-09-24 18:24:48,234 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:24:48,246 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:24:48,269 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:24:48,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:24:48,314 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:24:48,314 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:24:48,314 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:24:48,315 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:24:48,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:24:48,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:24:48,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:24:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:24:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 18:24:48,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:48,361 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, 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] [2020-09-24 18:24:48,361 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:48,370 INFO L82 PathProgramCache]: Analyzing trace with hash 382162911, now seen corresponding path program 1 times [2020-09-24 18:24:48,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:48,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732017845] [2020-09-24 18:24:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:48,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:48,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:24:49,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:24:49,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-09-24 18:24:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:24:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 18:24:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:24:49,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:49,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:49,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:49,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:24:49,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:24:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:49,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732017845] [2020-09-24 18:24:49,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:49,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:24:49,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568924587] [2020-09-24 18:24:49,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:24:49,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:49,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:24:49,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:24:49,693 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:24:51,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:51,847 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 18:24:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:24:51,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-24 18:24:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:51,873 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 18:24:51,874 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 18:24:51,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 18:24:51,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 18:24:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 18:24:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 18:24:51,986 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 56 [2020-09-24 18:24:51,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:51,987 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 18:24:51,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:24:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 18:24:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 18:24:51,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:51,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-09-24 18:24:51,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:24:51,998 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:51,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:51,998 INFO L82 PathProgramCache]: Analyzing trace with hash -701735608, now seen corresponding path program 1 times [2020-09-24 18:24:51,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:51,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636776788] [2020-09-24 18:24:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:52,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:53,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 18:24:53,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:53,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1857 [2020-09-24 18:24:53,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:53,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-24 18:24:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 18:24:53,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:53,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:53,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:53,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:53,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:53,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:24:53,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:53,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:54,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:54,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:54,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:24:54,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:54,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 18:24:54,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 18:24:54,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:54,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636776788] [2020-09-24 18:24:54,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:54,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:54,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377691373] [2020-09-24 18:24:54,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:54,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:54,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:54,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:54,131 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-24 18:24:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:56,057 INFO L93 Difference]: Finished difference Result 1235 states and 1577 transitions. [2020-09-24 18:24:56,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:56,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-24 18:24:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:56,064 INFO L225 Difference]: With dead ends: 1235 [2020-09-24 18:24:56,064 INFO L226 Difference]: Without dead ends: 707 [2020-09-24 18:24:56,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:56,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-24 18:24:56,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 697. [2020-09-24 18:24:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 18:24:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 855 transitions. [2020-09-24 18:24:56,105 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 855 transitions. Word has length 136 [2020-09-24 18:24:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:56,106 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 855 transitions. [2020-09-24 18:24:56,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 855 transitions. [2020-09-24 18:24:56,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-24 18:24:56,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:56,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1] [2020-09-24 18:24:56,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:24:56,112 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:56,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1690817075, now seen corresponding path program 1 times [2020-09-24 18:24:56,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:56,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873291737] [2020-09-24 18:24:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:56,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:56,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:56,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:56,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:57,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:59,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:59,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 18:24:59,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:59,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3001 [2020-09-24 18:24:59,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 18:24:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 18:24:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:59,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:59,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:59,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:59,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:59,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:59,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:24:59,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:59,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:59,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:59,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:59,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:59,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:59,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:24:59,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 18:24:59,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:24:59,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:59,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873291737] [2020-09-24 18:24:59,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:59,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:59,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253224747] [2020-09-24 18:24:59,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:59,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:59,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:59,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:59,478 INFO L87 Difference]: Start difference. First operand 697 states and 855 transitions. Second operand 5 states. [2020-09-24 18:25:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:01,326 INFO L93 Difference]: Finished difference Result 1541 states and 1945 transitions. [2020-09-24 18:25:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:01,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-24 18:25:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:01,332 INFO L225 Difference]: With dead ends: 1541 [2020-09-24 18:25:01,333 INFO L226 Difference]: Without dead ends: 673 [2020-09-24 18:25:01,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2020-09-24 18:25:01,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 663. [2020-09-24 18:25:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-09-24 18:25:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 803 transitions. [2020-09-24 18:25:01,364 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 803 transitions. Word has length 145 [2020-09-24 18:25:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:01,365 INFO L479 AbstractCegarLoop]: Abstraction has 663 states and 803 transitions. [2020-09-24 18:25:01,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 803 transitions. [2020-09-24 18:25:01,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 18:25:01,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:01,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1] [2020-09-24 18:25:01,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:25:01,371 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:01,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1174508811, now seen corresponding path program 1 times [2020-09-24 18:25:01,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:01,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009859115] [2020-09-24 18:25:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:01,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:01,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:04,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:04,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:06,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:06,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 18:25:06,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:25:06,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:25:06,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-24 18:25:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:25:06,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:06,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:06,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:06,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:06,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:06,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:25:06,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:06,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:06,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:06,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:06,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:25:06,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:06,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 18:25:06,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:25:06,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:06,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009859115] [2020-09-24 18:25:06,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:06,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:06,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438568371] [2020-09-24 18:25:06,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:06,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:06,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:06,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:06,807 INFO L87 Difference]: Start difference. First operand 663 states and 803 transitions. Second operand 5 states. [2020-09-24 18:25:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:08,528 INFO L93 Difference]: Finished difference Result 1844 states and 2302 transitions. [2020-09-24 18:25:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:08,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-24 18:25:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:08,541 INFO L225 Difference]: With dead ends: 1844 [2020-09-24 18:25:08,542 INFO L226 Difference]: Without dead ends: 1196 [2020-09-24 18:25:08,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2020-09-24 18:25:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1146. [2020-09-24 18:25:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1146 states. [2020-09-24 18:25:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1408 transitions. [2020-09-24 18:25:08,592 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1408 transitions. Word has length 148 [2020-09-24 18:25:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:08,593 INFO L479 AbstractCegarLoop]: Abstraction has 1146 states and 1408 transitions. [2020-09-24 18:25:08,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:08,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1408 transitions. [2020-09-24 18:25:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 18:25:08,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:08,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:08,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:25:08,598 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:08,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:08,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1483736159, now seen corresponding path program 1 times [2020-09-24 18:25:08,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:08,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39453472] [2020-09-24 18:25:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:08,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:09,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:10,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:10,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:10,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:13,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 18:25:13,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:25:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4727 [2020-09-24 18:25:13,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 18:25:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 18:25:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:13,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:13,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:13,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:13,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:25:13,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:13,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:13,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:13,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:13,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 18:25:13,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:13,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 18:25:13,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 18:25:13,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:25:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:13,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39453472] [2020-09-24 18:25:13,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:13,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:25:13,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227349317] [2020-09-24 18:25:13,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:25:13,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:13,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:25:13,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:13,724 INFO L87 Difference]: Start difference. First operand 1146 states and 1408 transitions. Second operand 6 states. [2020-09-24 18:25:16,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:16,332 INFO L93 Difference]: Finished difference Result 3811 states and 4914 transitions. [2020-09-24 18:25:16,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:25:16,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-09-24 18:25:16,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:16,357 INFO L225 Difference]: With dead ends: 3811 [2020-09-24 18:25:16,358 INFO L226 Difference]: Without dead ends: 2680 [2020-09-24 18:25:16,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:25:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2020-09-24 18:25:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2514. [2020-09-24 18:25:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2514 states. [2020-09-24 18:25:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3152 transitions. [2020-09-24 18:25:16,461 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3152 transitions. Word has length 164 [2020-09-24 18:25:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:16,464 INFO L479 AbstractCegarLoop]: Abstraction has 2514 states and 3152 transitions. [2020-09-24 18:25:16,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:25:16,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3152 transitions. [2020-09-24 18:25:16,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-09-24 18:25:16,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:16,479 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1] [2020-09-24 18:25:16,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:25:16,480 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:16,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:16,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2104805139, now seen corresponding path program 1 times [2020-09-24 18:25:16,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:16,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034498992] [2020-09-24 18:25:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:16,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:18,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:18,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:21,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:21,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-09-24 18:25:21,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:25:21,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:25:21,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:21,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 18:25:21,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 18:25:21,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:21,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:21,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:21,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:21,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:25:21,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:21,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:21,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:25:21,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:21,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 18:25:21,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:21,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:21,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:21,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 18:25:21,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:21,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:25:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:21,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:21,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:21,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:25:21,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:21,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-24 18:25:21,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 18:25:21,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:22,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-24 18:25:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:22,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:22,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 18:25:22,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 18:25:22,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 18:25:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:22,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 205 proven. 71 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 18:25:22,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034498992] [2020-09-24 18:25:22,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:22,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:25:22,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134327908] [2020-09-24 18:25:22,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:25:22,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:22,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:25:22,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:25:22,442 INFO L87 Difference]: Start difference. First operand 2514 states and 3152 transitions. Second operand 7 states. [2020-09-24 18:25:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:24,423 INFO L93 Difference]: Finished difference Result 4913 states and 6190 transitions. [2020-09-24 18:25:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:25:24,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2020-09-24 18:25:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:24,439 INFO L225 Difference]: With dead ends: 4913 [2020-09-24 18:25:24,440 INFO L226 Difference]: Without dead ends: 2564 [2020-09-24 18:25:24,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:25:24,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2020-09-24 18:25:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2234. [2020-09-24 18:25:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2234 states. [2020-09-24 18:25:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2618 transitions. [2020-09-24 18:25:24,534 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2618 transitions. Word has length 355 [2020-09-24 18:25:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:24,534 INFO L479 AbstractCegarLoop]: Abstraction has 2234 states and 2618 transitions. [2020-09-24 18:25:24,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:25:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2618 transitions. [2020-09-24 18:25:24,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-09-24 18:25:24,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:24,554 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:24,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:25:24,555 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:24,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:24,555 INFO L82 PathProgramCache]: Analyzing trace with hash -688080340, now seen corresponding path program 1 times [2020-09-24 18:25:24,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:24,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428661467] [2020-09-24 18:25:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:28,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:29,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-09-24 18:25:29,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:25:29,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:25:29,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-09-24 18:25:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 18:25:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:29,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:29,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:29,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:29,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:25:29,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:29,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:29,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 18:25:29,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:29,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:25:29,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:29,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 18:25:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:29,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:25:29,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:25:29,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:29,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:25:29,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 18:25:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:30,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:30,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:30,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 18:25:30,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:30,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 18:25:30,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:30,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:30,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:30,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 18:25:30,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 127 proven. 3 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-09-24 18:25:30,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428661467] [2020-09-24 18:25:30,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:30,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:30,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972874705] [2020-09-24 18:25:30,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:30,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:30,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:30,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:30,177 INFO L87 Difference]: Start difference. First operand 2234 states and 2618 transitions. Second operand 5 states. [2020-09-24 18:25:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:31,861 INFO L93 Difference]: Finished difference Result 4605 states and 5430 transitions. [2020-09-24 18:25:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:31,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 396 [2020-09-24 18:25:31,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:31,863 INFO L225 Difference]: With dead ends: 4605 [2020-09-24 18:25:31,864 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:25:31,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:31,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:25:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:25:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:25:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:25:31,876 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 396 [2020-09-24 18:25:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:31,876 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:25:31,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:25:31,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:25:31,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:25:31,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.