/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:10:36,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:10:36,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:10:36,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:10:36,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:10:36,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:10:36,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:10:36,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:10:36,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:10:36,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:10:36,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:10:36,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:10:36,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:10:36,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:10:36,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:10:36,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:10:36,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:10:36,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:10:36,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:10:36,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:10:36,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:10:36,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:10:36,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:10:36,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:10:36,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:10:36,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:10:36,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:10:36,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:10:36,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:10:36,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:10:36,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:10:36,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:10:36,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:10:36,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:10:36,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:10:36,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:10:36,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:10:36,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:10:36,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:10:36,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:10:36,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:10:36,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:10:36,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:10:36,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:10:36,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:10:36,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:10:36,572 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:10:36,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:10:36,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:10:36,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:10:36,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:10:36,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:10:36,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:10:36,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:10:36,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:10:36,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:10:36,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:10:36,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:10:36,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:10:36,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:10:36,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:10:36,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:10:36,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:10:36,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:10:36,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:10:36,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:10:36,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:10:36,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:10:36,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:10:36,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:10:36,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:10:36,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:10:36,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:10:36,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:10:36,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:10:36,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:10:36,896 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:10:36,897 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49.c [2020-10-14 03:10:36,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfe090a2b/26b8cb0dd12a45ceafc27c1f4c88aebc/FLAG24bfcdf05 [2020-10-14 03:10:37,725 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:10:37,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label49.c [2020-10-14 03:10:37,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfe090a2b/26b8cb0dd12a45ceafc27c1f4c88aebc/FLAG24bfcdf05 [2020-10-14 03:10:37,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfe090a2b/26b8cb0dd12a45ceafc27c1f4c88aebc [2020-10-14 03:10:37,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:10:37,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:10:37,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:10:37,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:10:37,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:10:37,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:10:37" (1/1) ... [2020-10-14 03:10:37,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a765448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:37, skipping insertion in model container [2020-10-14 03:10:37,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:10:37" (1/1) ... [2020-10-14 03:10:37,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:10:38,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:10:39,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:10:39,804 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:10:40,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:10:40,671 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:10:40,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:40 WrapperNode [2020-10-14 03:10:40,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:10:40,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:10:40,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:10:40,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:10:40,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:40" (1/1) ... [2020-10-14 03:10:40,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:40" (1/1) ... [2020-10-14 03:10:40,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:40" (1/1) ... [2020-10-14 03:10:40,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:40" (1/1) ... [2020-10-14 03:10:40,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:40" (1/1) ... [2020-10-14 03:10:40,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:40" (1/1) ... [2020-10-14 03:10:40,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:40" (1/1) ... [2020-10-14 03:10:41,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:10:41,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:10:41,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:10:41,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:10:41,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:10:41,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:10:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:10:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:10:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:10:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:10:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:10:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:10:41,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:10:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:10:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:10:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:10:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:10:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:10:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:10:41,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:10:41,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:10:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:10:52,030 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:10:52,031 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:10:52,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:10:52 BoogieIcfgContainer [2020-10-14 03:10:52,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:10:52,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:10:52,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:10:52,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:10:52,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:10:37" (1/3) ... [2020-10-14 03:10:52,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268a08fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:10:52, skipping insertion in model container [2020-10-14 03:10:52,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:40" (2/3) ... [2020-10-14 03:10:52,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268a08fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:10:52, skipping insertion in model container [2020-10-14 03:10:52,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:10:52" (3/3) ... [2020-10-14 03:10:52,054 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label49.c [2020-10-14 03:10:52,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:10:52,075 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:10:52,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:10:52,119 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:10:52,120 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:10:52,120 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:10:52,120 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:10:52,120 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:10:52,120 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:10:52,121 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:10:52,121 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:10:52,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:10:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 03:10:52,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:52,182 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] [2020-10-14 03:10:52,182 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:52,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:52,189 INFO L82 PathProgramCache]: Analyzing trace with hash -75489617, now seen corresponding path program 1 times [2020-10-14 03:10:52,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:52,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979420379] [2020-10-14 03:10:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:52,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:52,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:10:52,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:52,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-14 03:10:52,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:52,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:10:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:10:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:10:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:10:53,113 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-14 03:10:53,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:53,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:53,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:53,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:53,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:53,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:10:53,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:53,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:10:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:10:53,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979420379] [2020-10-14 03:10:53,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:10:53,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 03:10:53,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146948561] [2020-10-14 03:10:53,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:10:53,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:53,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:10:53,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:10:53,178 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 03:11:14,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:14,674 INFO L93 Difference]: Finished difference Result 4116 states and 7691 transitions. [2020-10-14 03:11:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:11:14,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-14 03:11:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:14,738 INFO L225 Difference]: With dead ends: 4116 [2020-10-14 03:11:14,738 INFO L226 Difference]: Without dead ends: 2899 [2020-10-14 03:11:14,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:11:14,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-14 03:11:14,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2762. [2020-10-14 03:11:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2020-10-14 03:11:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4546 transitions. [2020-10-14 03:11:14,980 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4546 transitions. Word has length 64 [2020-10-14 03:11:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:14,983 INFO L479 AbstractCegarLoop]: Abstraction has 2762 states and 4546 transitions. [2020-10-14 03:11:14,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:11:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4546 transitions. [2020-10-14 03:11:15,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 03:11:15,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:15,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:11:15,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:11:15,003 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:15,003 INFO L82 PathProgramCache]: Analyzing trace with hash 113253446, now seen corresponding path program 1 times [2020-10-14 03:11:15,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:15,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372419416] [2020-10-14 03:11:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:15,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:16,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:16,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:11:16,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:11:16,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-10-14 03:11:16,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:16,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:16,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:11:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 03:11:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 03:11:16,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:16,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:16,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:16,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:16,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:11:16,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:16,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:16,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:16,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:16,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:16,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:11:16,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:16,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 03:11:16,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:16,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:11:16,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:11:16,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372419416] [2020-10-14 03:11:16,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:11:16,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:11:16,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415613793] [2020-10-14 03:11:16,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:11:16,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:16,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:11:16,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:11:16,802 INFO L87 Difference]: Start difference. First operand 2762 states and 4546 transitions. Second operand 5 states. [2020-10-14 03:11:34,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:34,719 INFO L93 Difference]: Finished difference Result 5617 states and 9627 transitions. [2020-10-14 03:11:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:11:34,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 03:11:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:34,742 INFO L225 Difference]: With dead ends: 5617 [2020-10-14 03:11:34,743 INFO L226 Difference]: Without dead ends: 3692 [2020-10-14 03:11:34,750 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 [2020-10-14 03:11:34,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2020-10-14 03:11:34,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 3632. [2020-10-14 03:11:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3632 states. [2020-10-14 03:11:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 5812 transitions. [2020-10-14 03:11:34,850 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 5812 transitions. Word has length 134 [2020-10-14 03:11:34,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:34,851 INFO L479 AbstractCegarLoop]: Abstraction has 3632 states and 5812 transitions. [2020-10-14 03:11:34,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:11:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 5812 transitions. [2020-10-14 03:11:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 03:11:34,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:34,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:11:34,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:11:34,855 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:34,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:34,855 INFO L82 PathProgramCache]: Analyzing trace with hash -423870357, now seen corresponding path program 1 times [2020-10-14 03:11:34,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:34,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406849654] [2020-10-14 03:11:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:34,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:34,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:36,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:36,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:36,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 03:11:36,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:11:36,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1839 [2020-10-14 03:11:36,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:36,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:11:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 03:11:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:36,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:36,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:36,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:11:36,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:36,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:36,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:36,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:36,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:36,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:11:36,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 03:11:36,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:36,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:11:36,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:11:37,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406849654] [2020-10-14 03:11:37,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:11:37,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:11:37,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823083301] [2020-10-14 03:11:37,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:11:37,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:37,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:11:37,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:11:37,018 INFO L87 Difference]: Start difference. First operand 3632 states and 5812 transitions. Second operand 5 states. [2020-10-14 03:11:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:53,020 INFO L93 Difference]: Finished difference Result 10579 states and 17161 transitions. [2020-10-14 03:11:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:11:53,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 03:11:53,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:53,056 INFO L225 Difference]: With dead ends: 10579 [2020-10-14 03:11:53,056 INFO L226 Difference]: Without dead ends: 6953 [2020-10-14 03:11:53,069 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 [2020-10-14 03:11:53,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6953 states. [2020-10-14 03:11:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6953 to 6918. [2020-10-14 03:11:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6918 states. [2020-10-14 03:11:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 9829 transitions. [2020-10-14 03:11:53,329 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 9829 transitions. Word has length 139 [2020-10-14 03:11:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:53,334 INFO L479 AbstractCegarLoop]: Abstraction has 6918 states and 9829 transitions. [2020-10-14 03:11:53,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:11:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 9829 transitions. [2020-10-14 03:11:53,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 03:11:53,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:53,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:11:53,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:11:53,340 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:53,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:53,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1766306841, now seen corresponding path program 1 times [2020-10-14 03:11:53,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:53,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968634651] [2020-10-14 03:11:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:53,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:54,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:54,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 03:11:54,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:11:54,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-14 03:11:54,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:54,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 03:11:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 03:11:54,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:54,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:54,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:54,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:54,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:54,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:11:54,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:54,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:54,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:54,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:54,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:54,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:54,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:54,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:54,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 03:11:54,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:54,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:11:54,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:54,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:11:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:11:54,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968634651] [2020-10-14 03:11:54,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:11:54,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:11:54,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19912626] [2020-10-14 03:11:54,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:11:54,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:54,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:11:54,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:11:54,763 INFO L87 Difference]: Start difference. First operand 6918 states and 9829 transitions. Second operand 5 states. [2020-10-14 03:12:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:12:12,575 INFO L93 Difference]: Finished difference Result 20371 states and 29383 transitions. [2020-10-14 03:12:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:12:12,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-14 03:12:12,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:12:12,631 INFO L225 Difference]: With dead ends: 20371 [2020-10-14 03:12:12,632 INFO L226 Difference]: Without dead ends: 13459 [2020-10-14 03:12:12,653 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 [2020-10-14 03:12:12,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13459 states. [2020-10-14 03:12:12,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13459 to 13435. [2020-10-14 03:12:12,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13435 states. [2020-10-14 03:12:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13435 states to 13435 states and 18105 transitions. [2020-10-14 03:12:12,950 INFO L78 Accepts]: Start accepts. Automaton has 13435 states and 18105 transitions. Word has length 141 [2020-10-14 03:12:12,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:12:12,951 INFO L479 AbstractCegarLoop]: Abstraction has 13435 states and 18105 transitions. [2020-10-14 03:12:12,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:12:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 13435 states and 18105 transitions. [2020-10-14 03:12:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 03:12:12,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:12:12,955 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:12:12,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:12:12,956 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:12:12,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:12:12,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1258662912, now seen corresponding path program 1 times [2020-10-14 03:12:12,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:12:12,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599059003] [2020-10-14 03:12:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:12:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:13,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:13,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:14,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:14,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 03:12:14,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:12:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-14 03:12:14,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:14,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:12:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 03:12:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 03:12:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:14,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:12:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:14,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:14,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:14,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:12:14,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:14,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:12:14,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:14,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:12:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:12:14,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:14,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:12:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:14,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:14,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:14,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:12:14,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 03:12:14,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:14,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:12:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:12:14,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:12:14,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599059003] [2020-10-14 03:12:14,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:12:14,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:12:14,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213234968] [2020-10-14 03:12:14,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:12:14,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:12:14,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:12:14,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:12:14,273 INFO L87 Difference]: Start difference. First operand 13435 states and 18105 transitions. Second operand 5 states. [2020-10-14 03:12:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:12:36,533 INFO L93 Difference]: Finished difference Result 38251 states and 53166 transitions. [2020-10-14 03:12:36,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:12:36,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 03:12:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:12:36,640 INFO L225 Difference]: With dead ends: 38251 [2020-10-14 03:12:36,641 INFO L226 Difference]: Without dead ends: 24822 [2020-10-14 03:12:36,682 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 [2020-10-14 03:12:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24822 states. [2020-10-14 03:12:37,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24822 to 24812. [2020-10-14 03:12:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24812 states. [2020-10-14 03:12:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24812 states to 24812 states and 33034 transitions. [2020-10-14 03:12:37,278 INFO L78 Accepts]: Start accepts. Automaton has 24812 states and 33034 transitions. Word has length 146 [2020-10-14 03:12:37,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:12:37,279 INFO L479 AbstractCegarLoop]: Abstraction has 24812 states and 33034 transitions. [2020-10-14 03:12:37,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:12:37,279 INFO L276 IsEmpty]: Start isEmpty. Operand 24812 states and 33034 transitions. [2020-10-14 03:12:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 03:12:37,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:12:37,284 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:12:37,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:12:37,284 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:12:37,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:12:37,285 INFO L82 PathProgramCache]: Analyzing trace with hash 579632229, now seen corresponding path program 1 times [2020-10-14 03:12:37,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:12:37,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735914681] [2020-10-14 03:12:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:12:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:37,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:38,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:38,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:38,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 03:12:38,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:12:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-10-14 03:12:38,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:38,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:12:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 03:12:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 03:12:38,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:38,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:12:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:38,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:38,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:12:38,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:38,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:12:38,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:38,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:12:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:12:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:38,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:12:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:38,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:38,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 03:12:38,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 03:12:38,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:38,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:12:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 03:12:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:12:38,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735914681] [2020-10-14 03:12:38,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:12:38,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:12:38,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037590319] [2020-10-14 03:12:38,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:12:38,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:12:38,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:12:38,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:12:38,539 INFO L87 Difference]: Start difference. First operand 24812 states and 33034 transitions. Second operand 5 states. [2020-10-14 03:13:00,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:13:00,481 INFO L93 Difference]: Finished difference Result 61004 states and 84672 transitions. [2020-10-14 03:13:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:13:00,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 03:13:00,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:13:00,638 INFO L225 Difference]: With dead ends: 61004 [2020-10-14 03:13:00,639 INFO L226 Difference]: Without dead ends: 36198 [2020-10-14 03:13:00,721 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 [2020-10-14 03:13:00,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36198 states. [2020-10-14 03:13:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36198 to 36183. [2020-10-14 03:13:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36183 states. [2020-10-14 03:13:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36183 states to 36183 states and 47122 transitions. [2020-10-14 03:13:01,423 INFO L78 Accepts]: Start accepts. Automaton has 36183 states and 47122 transitions. Word has length 156 [2020-10-14 03:13:01,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:13:01,424 INFO L479 AbstractCegarLoop]: Abstraction has 36183 states and 47122 transitions. [2020-10-14 03:13:01,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:13:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 36183 states and 47122 transitions. [2020-10-14 03:13:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 03:13:01,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:01,428 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:13:01,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:13:01,429 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:01,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:01,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1142204665, now seen corresponding path program 1 times [2020-10-14 03:13:01,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:01,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351748853] [2020-10-14 03:13:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:01,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:03,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:04,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:04,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 03:13:04,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:13:04,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2548 [2020-10-14 03:13:04,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:04,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:04,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:13:04,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 03:13:04,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 03:13:04,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:04,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:04,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:04,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:04,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:04,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:13:04,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:04,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:13:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:13:04,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:04,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:13:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:04,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:04,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:04,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:13:04,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:04,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 03:13:04,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:04,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:04,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:04,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:13:04,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:13:04,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351748853] [2020-10-14 03:13:04,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:13:04,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:13:04,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844292486] [2020-10-14 03:13:04,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:13:04,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:13:04,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:13:04,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:13:04,305 INFO L87 Difference]: Start difference. First operand 36183 states and 47122 transitions. Second operand 5 states. [2020-10-14 03:13:23,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:13:23,054 INFO L93 Difference]: Finished difference Result 99134 states and 134920 transitions. [2020-10-14 03:13:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:13:23,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-14 03:13:23,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:13:23,262 INFO L225 Difference]: With dead ends: 99134 [2020-10-14 03:13:23,262 INFO L226 Difference]: Without dead ends: 62957 [2020-10-14 03:13:23,330 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 [2020-10-14 03:13:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62957 states. [2020-10-14 03:13:24,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62957 to 62146. [2020-10-14 03:13:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62146 states. [2020-10-14 03:13:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62146 states to 62146 states and 81154 transitions. [2020-10-14 03:13:24,357 INFO L78 Accepts]: Start accepts. Automaton has 62146 states and 81154 transitions. Word has length 157 [2020-10-14 03:13:24,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:13:24,358 INFO L479 AbstractCegarLoop]: Abstraction has 62146 states and 81154 transitions. [2020-10-14 03:13:24,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:13:24,358 INFO L276 IsEmpty]: Start isEmpty. Operand 62146 states and 81154 transitions. [2020-10-14 03:13:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 03:13:24,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:24,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:13:24,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:13:24,366 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:24,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:24,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1775279910, now seen corresponding path program 1 times [2020-10-14 03:13:24,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:24,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543624149] [2020-10-14 03:13:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:24,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:24,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:24,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:25,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:25,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 03:13:25,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:13:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-10-14 03:13:25,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:25,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:13:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 03:13:25,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:13:25,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:25,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:25,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:25,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:25,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:13:25,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:25,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:13:25,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:13:25,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:13:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:25,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:25,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:25,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:25,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 03:13:25,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:13:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 03:13:25,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:25,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:25,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:25,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 03:13:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 03:13:25,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:13:25,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543624149] [2020-10-14 03:13:25,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:13:25,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:13:25,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503601820] [2020-10-14 03:13:25,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:13:25,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:13:25,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:13:25,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:13:25,962 INFO L87 Difference]: Start difference. First operand 62146 states and 81154 transitions. Second operand 6 states. [2020-10-14 03:13:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:13:42,676 INFO L93 Difference]: Finished difference Result 113741 states and 149265 transitions. [2020-10-14 03:13:42,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:13:42,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 200 [2020-10-14 03:13:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:13:42,837 INFO L225 Difference]: With dead ends: 113741 [2020-10-14 03:13:42,838 INFO L226 Difference]: Without dead ends: 62134 [2020-10-14 03:13:42,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:13:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62134 states. [2020-10-14 03:13:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62134 to 62127. [2020-10-14 03:13:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62127 states. [2020-10-14 03:13:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62127 states to 62127 states and 81059 transitions. [2020-10-14 03:13:43,915 INFO L78 Accepts]: Start accepts. Automaton has 62127 states and 81059 transitions. Word has length 200 [2020-10-14 03:13:43,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:13:43,916 INFO L479 AbstractCegarLoop]: Abstraction has 62127 states and 81059 transitions. [2020-10-14 03:13:43,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:13:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 62127 states and 81059 transitions. [2020-10-14 03:13:43,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 03:13:43,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:43,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:13:43,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:13:43,925 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:43,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:43,925 INFO L82 PathProgramCache]: Analyzing trace with hash -146113379, now seen corresponding path program 1 times [2020-10-14 03:13:43,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:43,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492681294] [2020-10-14 03:13:43,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:44,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:45,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:46,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:46,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:46,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 03:13:46,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:13:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2825 [2020-10-14 03:13:46,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:46,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:13:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 03:13:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:13:46,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:13:46,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:46,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:46,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:46,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:46,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:13:46,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:46,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:13:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:13:46,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:13:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:47,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:47,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:47,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 03:13:47,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:47,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 03:13:47,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:47,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 03:13:47,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:13:47,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492681294] [2020-10-14 03:13:47,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:13:47,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:13:47,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694291892] [2020-10-14 03:13:47,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:13:47,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:13:47,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:13:47,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:13:47,313 INFO L87 Difference]: Start difference. First operand 62127 states and 81059 transitions. Second operand 5 states. [2020-10-14 03:14:14,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:14:14,991 INFO L93 Difference]: Finished difference Result 140507 states and 190380 transitions. [2020-10-14 03:14:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:14:14,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-14 03:14:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:14:15,188 INFO L225 Difference]: With dead ends: 140507 [2020-10-14 03:14:15,188 INFO L226 Difference]: Without dead ends: 78386 [2020-10-14 03:14:15,478 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 [2020-10-14 03:14:15,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78386 states. [2020-10-14 03:14:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78386 to 78365. [2020-10-14 03:14:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78365 states. [2020-10-14 03:14:16,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78365 states to 78365 states and 101586 transitions. [2020-10-14 03:14:16,689 INFO L78 Accepts]: Start accepts. Automaton has 78365 states and 101586 transitions. Word has length 210 [2020-10-14 03:14:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:14:16,690 INFO L479 AbstractCegarLoop]: Abstraction has 78365 states and 101586 transitions. [2020-10-14 03:14:16,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:14:16,691 INFO L276 IsEmpty]: Start isEmpty. Operand 78365 states and 101586 transitions. [2020-10-14 03:14:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 03:14:16,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:14:16,704 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:14:16,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:14:16,704 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:14:16,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:14:16,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1814135777, now seen corresponding path program 1 times [2020-10-14 03:14:16,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:14:16,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901354284] [2020-10-14 03:14:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:14:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:16,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:17,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:21,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:21,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 03:14:21,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:14:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 03:14:21,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:21,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:14:21,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:14:21,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:14:21,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:14:21,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:14:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:21,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:21,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:21,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:14:21,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:21,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:14:21,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:21,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:14:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:21,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:14:21,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:21,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:14:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:21,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:21,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:14:21,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:21,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 03:14:21,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:21,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:21,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:14:21,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:21,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:14:21,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:14:21,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:14:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:22,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:22,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:14:22,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:22,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 03:14:22,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:22,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:14:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 03:14:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:14:22,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 03:14:22,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901354284] [2020-10-14 03:14:22,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:14:22,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:14:22,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076901335] [2020-10-14 03:14:22,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:14:22,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:14:22,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:14:22,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:14:22,158 INFO L87 Difference]: Start difference. First operand 78365 states and 101586 transitions. Second operand 5 states.