/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=0.6 --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/Problem02_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:39,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:39,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:39,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:39,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:39,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:39,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:39,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:39,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:39,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:39,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:39,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:40,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:40,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:40,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:40,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:40,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:40,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:40,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:40,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:40,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:40,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:40,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:40,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:40,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:40,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:40,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:40,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:40,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:40,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:40,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:40,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:40,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:40,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:40,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:40,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:40,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:40,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:40,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:40,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:40,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:40,058 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 06:43:40,099 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:40,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:40,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:40,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:40,103 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:40,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:40,103 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:40,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:40,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:40,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:40,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:40,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:40,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:40,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:40,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:40,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:40,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:40,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:40,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:40,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:40,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:40,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:40,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:40,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:40,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:40,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:40,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:40,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:40,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:40,109 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:43:40,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:40,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:40,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:40,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:40,613 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:40,614 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label01.c [2020-09-25 06:43:40,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46eba70dc/021d3f3cfafc470b9fd99e182252f132/FLAG4f383aaa0 [2020-09-25 06:43:41,363 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:41,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label01.c [2020-09-25 06:43:41,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46eba70dc/021d3f3cfafc470b9fd99e182252f132/FLAG4f383aaa0 [2020-09-25 06:43:41,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46eba70dc/021d3f3cfafc470b9fd99e182252f132 [2020-09-25 06:43:41,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:41,616 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:41,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:41,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:41,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:41,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:41" (1/1) ... [2020-09-25 06:43:41,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:41, skipping insertion in model container [2020-09-25 06:43:41,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:41" (1/1) ... [2020-09-25 06:43:41,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:41,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:42,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:42,164 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:42,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:42,437 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:42,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:42 WrapperNode [2020-09-25 06:43:42,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:42,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:42,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:42,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:42,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:42" (1/1) ... [2020-09-25 06:43:42,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:42" (1/1) ... [2020-09-25 06:43:42,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:42" (1/1) ... [2020-09-25 06:43:42,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:42" (1/1) ... [2020-09-25 06:43:42,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:42" (1/1) ... [2020-09-25 06:43:42,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:42" (1/1) ... [2020-09-25 06:43:42,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:42" (1/1) ... [2020-09-25 06:43:42,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:42,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:42,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:42,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:42,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:42" (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 06:43:42,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:42,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:42,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:42,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:44,024 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:44,024 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:44,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:44 BoogieIcfgContainer [2020-09-25 06:43:44,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:44,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:44,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:44,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:44,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:41" (1/3) ... [2020-09-25 06:43:44,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:44, skipping insertion in model container [2020-09-25 06:43:44,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:42" (2/3) ... [2020-09-25 06:43:44,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:44, skipping insertion in model container [2020-09-25 06:43:44,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:44" (3/3) ... [2020-09-25 06:43:44,043 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label01.c [2020-09-25 06:43:44,055 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:44,066 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:44,088 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:44,121 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:44,121 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:44,122 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:44,122 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:44,122 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:44,122 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:44,122 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:44,122 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:43:44,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 06:43:44,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:44,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:44,183 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:44,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1587967458, now seen corresponding path program 1 times [2020-09-25 06:43:44,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:44,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-25 06:43:44,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:44,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:47,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:49,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 06:43:49,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:49,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:43:49,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:49,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:43:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 06:43:49,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 06:43:49,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:49,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:49,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:43:49,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:43:49,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:49,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:43:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:49,841 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 06:43:49,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-25 06:43:49,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:49,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:43:49,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336692781] [2020-09-25 06:43:49,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:49,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:49,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:49,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:49,874 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 06:43:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:52,497 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 06:43:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:52,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 06:43:52,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:52,533 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 06:43:52,534 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 06:43:52,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 06:43:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 06:43:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 06:43:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 06:43:52,655 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 139 [2020-09-25 06:43:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:52,657 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 06:43:52,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 06:43:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 06:43:52,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:52,667 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 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 06:43:52,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:52,667 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:52,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:52,668 INFO L82 PathProgramCache]: Analyzing trace with hash 366034702, now seen corresponding path program 1 times [2020-09-25 06:43:52,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:52,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185722273] [2020-09-25 06:43:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:57,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:57,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 06:43:57,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:57,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:43:57,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:57,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:57,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:43:57,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 06:43:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:57,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:57,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:57,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:43:57,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:57,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:43:57,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:57,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 06:43:57,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:43:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:57,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:57,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:57,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:43:57,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:43:57,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:57,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:43:57,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:58,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185722273] [2020-09-25 06:43:58,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:58,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:58,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049333963] [2020-09-25 06:43:58,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:58,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:58,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:58,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:58,044 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 06:43:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:59,983 INFO L93 Difference]: Finished difference Result 1623 states and 2082 transitions. [2020-09-25 06:43:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:59,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 06:43:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:59,996 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 06:43:59,997 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 06:44:00,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:00,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 06:44:00,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 968. [2020-09-25 06:44:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-09-25 06:44:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1232 transitions. [2020-09-25 06:44:00,057 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1232 transitions. Word has length 157 [2020-09-25 06:44:00,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:00,058 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1232 transitions. [2020-09-25 06:44:00,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:00,058 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1232 transitions. [2020-09-25 06:44:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 06:44:00,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:00,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:00,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:44:00,065 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:00,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:00,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1889998438, now seen corresponding path program 1 times [2020-09-25 06:44:00,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:00,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570269764] [2020-09-25 06:44:00,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:00,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:01,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:05,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:05,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 06:44:05,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:05,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:44:05,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:05,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 06:44:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 06:44:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:05,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:05,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:05,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:05,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:05,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:05,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:05,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:05,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:05,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:05,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:05,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:05,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 06:44:05,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:05,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:44:05,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:05,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570269764] [2020-09-25 06:44:05,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:05,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:05,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809087331] [2020-09-25 06:44:05,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:05,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:05,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:05,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:05,389 INFO L87 Difference]: Start difference. First operand 968 states and 1232 transitions. Second operand 5 states. [2020-09-25 06:44:07,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:07,491 INFO L93 Difference]: Finished difference Result 2422 states and 3187 transitions. [2020-09-25 06:44:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:07,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-25 06:44:07,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:07,506 INFO L225 Difference]: With dead ends: 2422 [2020-09-25 06:44:07,510 INFO L226 Difference]: Without dead ends: 1476 [2020-09-25 06:44:07,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-09-25 06:44:07,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1426. [2020-09-25 06:44:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-09-25 06:44:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1751 transitions. [2020-09-25 06:44:07,588 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1751 transitions. Word has length 177 [2020-09-25 06:44:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:07,589 INFO L479 AbstractCegarLoop]: Abstraction has 1426 states and 1751 transitions. [2020-09-25 06:44:07,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1751 transitions. [2020-09-25 06:44:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 06:44:07,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:07,597 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:07,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:44:07,599 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:07,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:07,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1392969778, now seen corresponding path program 1 times [2020-09-25 06:44:07,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:07,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338766257] [2020-09-25 06:44:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:07,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:08,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:11,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:12,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 06:44:12,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:12,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:44:12,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:12,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 06:44:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 06:44:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:12,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:12,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:12,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:12,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:12,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:44:12,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:12,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:12,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:12,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:12,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:12,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:44:12,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:12,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:44:12,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:12,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:44:12,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:12,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:44:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:12,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:13,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:44:13,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:44:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 06:44:13,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:13,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:44:13,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:44:13,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338766257] [2020-09-25 06:44:13,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:13,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:44:13,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505862568] [2020-09-25 06:44:13,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:44:13,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:13,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:44:13,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:13,107 INFO L87 Difference]: Start difference. First operand 1426 states and 1751 transitions. Second operand 6 states. [2020-09-25 06:44:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:15,197 INFO L93 Difference]: Finished difference Result 3482 states and 4468 transitions. [2020-09-25 06:44:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:44:15,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2020-09-25 06:44:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:15,210 INFO L225 Difference]: With dead ends: 3482 [2020-09-25 06:44:15,210 INFO L226 Difference]: Without dead ends: 2078 [2020-09-25 06:44:15,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 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 06:44:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2020-09-25 06:44:15,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1906. [2020-09-25 06:44:15,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2020-09-25 06:44:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2319 transitions. [2020-09-25 06:44:15,280 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2319 transitions. Word has length 196 [2020-09-25 06:44:15,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:15,280 INFO L479 AbstractCegarLoop]: Abstraction has 1906 states and 2319 transitions. [2020-09-25 06:44:15,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:44:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2319 transitions. [2020-09-25 06:44:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 06:44:15,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:15,289 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:15,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:44:15,289 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:15,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:15,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1631749271, now seen corresponding path program 1 times [2020-09-25 06:44:15,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:15,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075604311] [2020-09-25 06:44:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:16,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:20,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 06:44:20,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:44:20,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:44:20,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:20,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:44:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:44:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:20,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:20,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:20,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:20,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:20,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:20,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:20,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:20,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:20,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:20,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:20,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:44:20,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:20,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:44:20,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:20,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:44:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:20,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:44:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:20,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:44:20,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:20,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 06:44:20,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:20,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:44:20,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:44:20,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075604311] [2020-09-25 06:44:20,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:20,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:20,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147659561] [2020-09-25 06:44:20,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:20,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:20,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:20,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:20,605 INFO L87 Difference]: Start difference. First operand 1906 states and 2319 transitions. Second operand 7 states. [2020-09-25 06:44:22,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:22,937 INFO L93 Difference]: Finished difference Result 4970 states and 6399 transitions. [2020-09-25 06:44:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:44:22,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 06:44:22,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:22,952 INFO L225 Difference]: With dead ends: 4970 [2020-09-25 06:44:22,952 INFO L226 Difference]: Without dead ends: 2670 [2020-09-25 06:44:22,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:44:22,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2020-09-25 06:44:23,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2598. [2020-09-25 06:44:23,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2598 states. [2020-09-25 06:44:23,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3079 transitions. [2020-09-25 06:44:23,037 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3079 transitions. Word has length 201 [2020-09-25 06:44:23,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:23,038 INFO L479 AbstractCegarLoop]: Abstraction has 2598 states and 3079 transitions. [2020-09-25 06:44:23,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:44:23,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3079 transitions. [2020-09-25 06:44:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 06:44:23,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:23,048 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:23,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:44:23,049 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:23,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:23,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1939481957, now seen corresponding path program 1 times [2020-09-25 06:44:23,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:23,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833567318] [2020-09-25 06:44:23,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:23,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:27,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:28,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 06:44:28,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:44:28,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-09-25 06:44:28,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:28,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:28,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-09-25 06:44:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 06:44:28,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:28,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:28,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:28,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:28,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:28,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:28,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:28,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:28,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:28,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:28,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:44:28,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:44:28,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:28,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:28,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:28,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:28,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:28,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:44:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:28,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:28,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 06:44:28,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:28,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:44:28,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:28,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:28,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 06:44:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:28,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:28,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:44:28,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:44:28,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:28,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:44:28,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 73 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 06:44:28,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833567318] [2020-09-25 06:44:28,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:28,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:28,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710945832] [2020-09-25 06:44:28,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:28,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:28,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:28,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:28,460 INFO L87 Difference]: Start difference. First operand 2598 states and 3079 transitions. Second operand 5 states. [2020-09-25 06:44:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:30,212 INFO L93 Difference]: Finished difference Result 5949 states and 7167 transitions. [2020-09-25 06:44:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:30,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-09-25 06:44:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:30,231 INFO L225 Difference]: With dead ends: 5949 [2020-09-25 06:44:30,232 INFO L226 Difference]: Without dead ends: 3373 [2020-09-25 06:44:30,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:30,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2020-09-25 06:44:30,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3356. [2020-09-25 06:44:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3356 states. [2020-09-25 06:44:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 3924 transitions. [2020-09-25 06:44:30,327 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 3924 transitions. Word has length 233 [2020-09-25 06:44:30,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:30,328 INFO L479 AbstractCegarLoop]: Abstraction has 3356 states and 3924 transitions. [2020-09-25 06:44:30,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 3924 transitions. [2020-09-25 06:44:30,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 06:44:30,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:30,341 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:30,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:44:30,342 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:30,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:30,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1841273051, now seen corresponding path program 1 times [2020-09-25 06:44:30,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:30,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723662425] [2020-09-25 06:44:30,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:30,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:30,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking...