/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=WIDESTAMONGSMALL --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/eca-rers2012/Problem10_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:30,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:30,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:30,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:30,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:30,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:30,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:30,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:31,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:31,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:31,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:31,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:31,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:31,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:31,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:31,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:31,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:31,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:31,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:31,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:31,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:31,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:31,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:31,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:31,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:31,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:31,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:31,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:31,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:31,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:31,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:31,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:31,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:31,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:31,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:31,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:31,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:31,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:31,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:31,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:31,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:31,055 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 05:38:31,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:31,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:31,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:31,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:31,108 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:31,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:31,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:31,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:31,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:31,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:31,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:31,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:31,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:31,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:31,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:31,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:31,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:31,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:31,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:31,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:31,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:31,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:31,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:31,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:31,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:31,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:31,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:31,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:31,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:31,115 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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:38:31,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:31,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:31,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:31,594 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:31,594 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:31,595 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 05:38:31,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a3ee8679/2ffc64618d0540bfa8f990f67a5c4084/FLAG7ab192f6a [2020-09-25 05:38:32,270 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:32,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 05:38:32,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a3ee8679/2ffc64618d0540bfa8f990f67a5c4084/FLAG7ab192f6a [2020-09-25 05:38:32,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a3ee8679/2ffc64618d0540bfa8f990f67a5c4084 [2020-09-25 05:38:32,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:32,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:32,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:32,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:32,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:32,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:32" (1/1) ... [2020-09-25 05:38:32,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5f9fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32, skipping insertion in model container [2020-09-25 05:38:32,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:32" (1/1) ... [2020-09-25 05:38:32,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:32,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:33,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:33,179 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:33,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:33,506 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:33,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:33 WrapperNode [2020-09-25 05:38:33,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:33,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:33,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:33,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:33,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:33" (1/1) ... [2020-09-25 05:38:33,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:33" (1/1) ... [2020-09-25 05:38:33,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:33" (1/1) ... [2020-09-25 05:38:33,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:33" (1/1) ... [2020-09-25 05:38:33,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:33" (1/1) ... [2020-09-25 05:38:33,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:33" (1/1) ... [2020-09-25 05:38:33,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:33" (1/1) ... [2020-09-25 05:38:33,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:33,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:33,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:33,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:33,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:33" (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 05:38:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:38:35,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:38:35,114 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:38:35,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:35 BoogieIcfgContainer [2020-09-25 05:38:35,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:38:35,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:38:35,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:38:35,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:38:35,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:32" (1/3) ... [2020-09-25 05:38:35,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:35, skipping insertion in model container [2020-09-25 05:38:35,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:33" (2/3) ... [2020-09-25 05:38:35,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:35, skipping insertion in model container [2020-09-25 05:38:35,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:35" (3/3) ... [2020-09-25 05:38:35,132 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-25 05:38:35,145 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:38:35,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:38:35,184 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:38:35,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:38:35,223 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:38:35,223 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:38:35,223 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:38:35,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:38:35,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:38:35,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:38:35,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:38:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:38:35,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 05:38:35,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:35,267 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] [2020-09-25 05:38:35,268 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:35,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:35,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-25 05:38:35,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:35,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086755843] [2020-09-25 05:38:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:35,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:35,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:36,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:36,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 05:38:36,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:38:36,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 915 [2020-09-25 05:38:36,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:36,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:36,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:36,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:38:36,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:38:36,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:38:36,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:36,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:36,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:36,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:36,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:38:36,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:36,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:38:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:36,532 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 05:38:36,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086755843] [2020-09-25 05:38:36,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:36,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:38:36,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245386979] [2020-09-25 05:38:36,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:38:36,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:36,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:38:36,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:38:36,570 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:38:38,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:38,686 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 05:38:38,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:38:38,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 05:38:38,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:38,711 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 05:38:38,711 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 05:38:38,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 05:38:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 05:38:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 05:38:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 05:38:38,878 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-25 05:38:38,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:38,879 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 05:38:38,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:38:38,879 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 05:38:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 05:38:38,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:38,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:38,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:38,888 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:38,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-25 05:38:38,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:38,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789106228] [2020-09-25 05:38:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:38,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:40,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:42,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:42,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:43,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 05:38:43,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:38:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 05:38:43,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:43,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 05:38:43,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:38:43,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:44,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:44,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:44,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:44,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:44,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:44,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:44,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:44,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:44,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:44,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:44,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:38:44,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 05:38:44,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:44,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:38:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:44,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789106228] [2020-09-25 05:38:44,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:44,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:44,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217121606] [2020-09-25 05:38:44,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:44,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:44,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:44,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:44,334 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 5 states. [2020-09-25 05:38:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:46,785 INFO L93 Difference]: Finished difference Result 1375 states and 1726 transitions. [2020-09-25 05:38:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:46,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 05:38:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:46,794 INFO L225 Difference]: With dead ends: 1375 [2020-09-25 05:38:46,794 INFO L226 Difference]: Without dead ends: 814 [2020-09-25 05:38:46,797 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 [2020-09-25 05:38:46,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-09-25 05:38:46,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 576. [2020-09-25 05:38:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 05:38:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 05:38:46,824 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 129 [2020-09-25 05:38:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:46,825 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 05:38:46,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:46,825 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 05:38:46,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 05:38:46,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:46,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:46,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:38:46,830 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:46,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:46,831 INFO L82 PathProgramCache]: Analyzing trace with hash 677426997, now seen corresponding path program 1 times [2020-09-25 05:38:46,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:46,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361724308] [2020-09-25 05:38:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:46,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:47,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:47,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:48,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 05:38:48,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2004 [2020-09-25 05:38:48,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:48,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:48,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:48,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 05:38:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:38:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:48,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:48,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:48,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:48,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:48,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:48,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:49,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:49,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:38:49,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 05:38:49,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:49,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:38:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:49,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361724308] [2020-09-25 05:38:49,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:49,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:49,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916477118] [2020-09-25 05:38:49,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:49,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:49,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:49,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:49,123 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 5 states. [2020-09-25 05:38:50,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:50,895 INFO L93 Difference]: Finished difference Result 1451 states and 1871 transitions. [2020-09-25 05:38:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:50,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 05:38:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:50,905 INFO L225 Difference]: With dead ends: 1451 [2020-09-25 05:38:50,905 INFO L226 Difference]: Without dead ends: 890 [2020-09-25 05:38:50,908 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 [2020-09-25 05:38:50,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-09-25 05:38:50,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 880. [2020-09-25 05:38:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-09-25 05:38:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1113 transitions. [2020-09-25 05:38:50,950 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1113 transitions. Word has length 129 [2020-09-25 05:38:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:50,952 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1113 transitions. [2020-09-25 05:38:50,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:50,952 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1113 transitions. [2020-09-25 05:38:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 05:38:50,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:50,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:50,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:50,960 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:50,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:50,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2104953989, now seen corresponding path program 1 times [2020-09-25 05:38:50,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:50,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081281974] [2020-09-25 05:38:50,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:52,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:55,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 05:38:55,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:38:55,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4497 [2020-09-25 05:38:55,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:55,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:55,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:38:55,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:38:55,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:55,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:55,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:55,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:55,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:55,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:55,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:55,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:55,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:55,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:55,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:55,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:55,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:55,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:55,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 05:38:55,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:55,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:38:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:55,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081281974] [2020-09-25 05:38:55,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:55,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:55,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400616989] [2020-09-25 05:38:55,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:55,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:55,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:55,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:55,821 INFO L87 Difference]: Start difference. First operand 880 states and 1113 transitions. Second operand 6 states. [2020-09-25 05:38:58,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:58,456 INFO L93 Difference]: Finished difference Result 2740 states and 3647 transitions. [2020-09-25 05:38:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:38:58,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-09-25 05:38:58,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:58,470 INFO L225 Difference]: With dead ends: 2740 [2020-09-25 05:38:58,471 INFO L226 Difference]: Without dead ends: 1875 [2020-09-25 05:38:58,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2020-09-25 05:38:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1808. [2020-09-25 05:38:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-09-25 05:38:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2397 transitions. [2020-09-25 05:38:58,582 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2397 transitions. Word has length 135 [2020-09-25 05:38:58,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:58,582 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2397 transitions. [2020-09-25 05:38:58,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:38:58,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2397 transitions. [2020-09-25 05:38:58,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 05:38:58,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:58,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:58,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:58,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:58,587 INFO L82 PathProgramCache]: Analyzing trace with hash -431173929, now seen corresponding path program 1 times [2020-09-25 05:38:58,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:58,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853723893] [2020-09-25 05:38:58,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:59,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:02,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 05:39:02,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:39:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3868 [2020-09-25 05:39:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:02,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-25 05:39:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:39:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:02,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:02,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:02,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:02,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:02,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:02,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:02,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:02,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:02,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:02,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:02,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:02,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:39:02,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 05:39:02,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:02,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:39:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:02,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853723893] [2020-09-25 05:39:02,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:02,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:02,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622945139] [2020-09-25 05:39:02,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:02,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:02,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:02,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:02,723 INFO L87 Difference]: Start difference. First operand 1808 states and 2397 transitions. Second operand 5 states. [2020-09-25 05:39:04,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:04,793 INFO L93 Difference]: Finished difference Result 4991 states and 6858 transitions. [2020-09-25 05:39:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:04,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 05:39:04,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:04,814 INFO L225 Difference]: With dead ends: 4991 [2020-09-25 05:39:04,815 INFO L226 Difference]: Without dead ends: 3198 [2020-09-25 05:39:04,825 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 [2020-09-25 05:39:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2020-09-25 05:39:04,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 2276. [2020-09-25 05:39:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-09-25 05:39:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2958 transitions. [2020-09-25 05:39:04,934 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2958 transitions. Word has length 154 [2020-09-25 05:39:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:04,935 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 2958 transitions. [2020-09-25 05:39:04,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2958 transitions. [2020-09-25 05:39:04,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 05:39:04,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:04,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:04,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:39:04,940 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:04,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1743030617, now seen corresponding path program 1 times [2020-09-25 05:39:04,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:04,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359724041] [2020-09-25 05:39:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:05,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:09,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:09,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 05:39:09,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:09,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4132 [2020-09-25 05:39:09,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:09,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-25 05:39:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:39:09,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:09,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:09,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:09,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:09,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:09,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:09,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:09,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:09,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:09,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:09,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:09,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:09,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 05:39:09,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:09,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 05:39:09,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:09,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 05:39:09,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:09,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359724041] [2020-09-25 05:39:09,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:09,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:09,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742479255] [2020-09-25 05:39:09,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:09,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:09,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:09,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:09,482 INFO L87 Difference]: Start difference. First operand 2276 states and 2958 transitions. Second operand 5 states. [2020-09-25 05:39:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:11,655 INFO L93 Difference]: Finished difference Result 5327 states and 7012 transitions. [2020-09-25 05:39:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:11,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 05:39:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:11,671 INFO L225 Difference]: With dead ends: 5327 [2020-09-25 05:39:11,672 INFO L226 Difference]: Without dead ends: 3066 [2020-09-25 05:39:11,680 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 [2020-09-25 05:39:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2020-09-25 05:39:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 3037. [2020-09-25 05:39:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3037 states. [2020-09-25 05:39:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 3919 transitions. [2020-09-25 05:39:11,804 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 3919 transitions. Word has length 168 [2020-09-25 05:39:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:11,805 INFO L479 AbstractCegarLoop]: Abstraction has 3037 states and 3919 transitions. [2020-09-25 05:39:11,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:11,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 3919 transitions. [2020-09-25 05:39:11,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 05:39:11,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:11,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:11,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:39:11,810 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:11,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:11,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1615501736, now seen corresponding path program 1 times [2020-09-25 05:39:11,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:11,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295596763] [2020-09-25 05:39:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:11,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:13,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:13,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:15,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 05:39:15,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:39:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3529 [2020-09-25 05:39:15,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:15,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-25 05:39:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 05:39:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:15,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:15,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:15,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:15,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:15,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:15,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:15,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:15,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:15,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:15,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:15,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:15,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:15,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 05:39:15,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 05:39:15,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:15,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 05:39:15,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:15,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295596763] [2020-09-25 05:39:15,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:15,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:15,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745105915] [2020-09-25 05:39:15,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:15,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:15,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:15,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:15,666 INFO L87 Difference]: Start difference. First operand 3037 states and 3919 transitions. Second operand 5 states. [2020-09-25 05:39:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:17,593 INFO L93 Difference]: Finished difference Result 6979 states and 9114 transitions. [2020-09-25 05:39:17,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:17,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 05:39:17,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:17,611 INFO L225 Difference]: With dead ends: 6979 [2020-09-25 05:39:17,611 INFO L226 Difference]: Without dead ends: 2699 [2020-09-25 05:39:17,624 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 [2020-09-25 05:39:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2020-09-25 05:39:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2689. [2020-09-25 05:39:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2689 states. [2020-09-25 05:39:17,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 3401 transitions. [2020-09-25 05:39:17,701 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 3401 transitions. Word has length 173 [2020-09-25 05:39:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:17,701 INFO L479 AbstractCegarLoop]: Abstraction has 2689 states and 3401 transitions. [2020-09-25 05:39:17,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 3401 transitions. [2020-09-25 05:39:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 05:39:17,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:17,708 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 05:39:17,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:39:17,709 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:17,709 INFO L82 PathProgramCache]: Analyzing trace with hash -928646965, now seen corresponding path program 1 times [2020-09-25 05:39:17,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:17,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403164162] [2020-09-25 05:39:17,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking...