/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/Problem18_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:19:11,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:19:11,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:19:11,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:19:11,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:19:11,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:19:11,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:19:11,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:19:11,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:19:11,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:19:11,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:19:11,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:19:11,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:19:11,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:19:11,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:19:11,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:19:11,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:19:11,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:19:11,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:19:11,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:19:11,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:19:11,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:19:11,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:19:11,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:19:11,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:19:11,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:19:11,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:19:11,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:19:11,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:19:11,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:19:11,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:19:11,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:19:11,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:19:11,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:19:11,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:19:11,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:19:11,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:19:11,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:19:11,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:19:11,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:19:11,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:19:11,560 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 04:19:11,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:19:11,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:19:11,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:19:11,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:19:11,602 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:19:11,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:19:11,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:19:11,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:19:11,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:19:11,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:19:11,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:19:11,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:19:11,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:19:11,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:19:11,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:19:11,606 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:19:11,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:19:11,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:19:11,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:19:11,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:19:11,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:19:11,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:19:11,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:19:11,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:19:11,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:19:11,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:19:11,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:19:11,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:19:11,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:19:11,610 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 04:19:11,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:19:11,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:19:11,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:19:11,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:19:11,932 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:19:11,933 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label36.c [2020-10-14 04:19:11,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc70c34c/7df7d052a5cd404da749c4aecb2c2700/FLAG78c17e679 [2020-10-14 04:19:12,787 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:19:12,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label36.c [2020-10-14 04:19:12,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc70c34c/7df7d052a5cd404da749c4aecb2c2700/FLAG78c17e679 [2020-10-14 04:19:13,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc70c34c/7df7d052a5cd404da749c4aecb2c2700 [2020-10-14 04:19:13,330 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:19:13,332 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:19:13,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:19:13,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:19:13,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:19:13,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:13" (1/1) ... [2020-10-14 04:19:13,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ae2273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:13, skipping insertion in model container [2020-10-14 04:19:13,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:13" (1/1) ... [2020-10-14 04:19:13,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:19:13,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:19:14,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:19:14,747 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:19:15,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:19:15,381 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:19:15,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:15 WrapperNode [2020-10-14 04:19:15,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:19:15,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:19:15,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:19:15,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:19:15,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:15" (1/1) ... [2020-10-14 04:19:15,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:15" (1/1) ... [2020-10-14 04:19:15,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:15" (1/1) ... [2020-10-14 04:19:15,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:15" (1/1) ... [2020-10-14 04:19:15,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:15" (1/1) ... [2020-10-14 04:19:15,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:15" (1/1) ... [2020-10-14 04:19:15,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:15" (1/1) ... [2020-10-14 04:19:15,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:19:15,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:19:15,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:19:15,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:19:15,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:15" (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 04:19:15,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:19:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:19:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:19:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:19:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:19:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:19:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:19:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:19:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:19:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:19:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:19:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:19:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:19:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:19:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:19:22,189 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:19:22,189 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:19:22,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:22 BoogieIcfgContainer [2020-10-14 04:19:22,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:19:22,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:19:22,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:19:22,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:19:22,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:19:13" (1/3) ... [2020-10-14 04:19:22,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdd788a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:22, skipping insertion in model container [2020-10-14 04:19:22,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:15" (2/3) ... [2020-10-14 04:19:22,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdd788a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:22, skipping insertion in model container [2020-10-14 04:19:22,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:22" (3/3) ... [2020-10-14 04:19:22,213 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label36.c [2020-10-14 04:19:22,225 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:19:22,235 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:19:22,251 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:19:22,281 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:19:22,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:19:22,282 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:19:22,282 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:19:22,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:19:22,282 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:19:22,282 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:19:22,283 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:19:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:19:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:19:22,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:22,328 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] [2020-10-14 04:19:22,329 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:22,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:22,336 INFO L82 PathProgramCache]: Analyzing trace with hash -268856958, now seen corresponding path program 1 times [2020-10-14 04:19:22,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:22,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27221516] [2020-10-14 04:19:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:22,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:22,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:22,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 04:19:22,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:22,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-14 04:19:22,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:22,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:22,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:19:22,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:19:22,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 04:19:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:19:23,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:23,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:23,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:23,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:23,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:19:23,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:23,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:19:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:19:23,081 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 04:19:23,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27221516] [2020-10-14 04:19:23,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:19:23,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:19:23,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631053705] [2020-10-14 04:19:23,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:19:23,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:23,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:19:23,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:19:23,109 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:19:31,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:31,348 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:19:31,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:31,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-14 04:19:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:31,394 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:19:31,395 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:19:31,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:19:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:19:31,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:19:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-14 04:19:31,605 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 33 [2020-10-14 04:19:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:31,606 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-14 04:19:31,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:19:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-14 04:19:31,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 04:19:31,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:31,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:31,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:19:31,613 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:31,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:31,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1613489274, now seen corresponding path program 1 times [2020-10-14 04:19:31,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:31,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950631855] [2020-10-14 04:19:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:31,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:32,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:32,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 04:19:32,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:19:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-14 04:19:32,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:32,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:19:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:19:32,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:19:32,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:32,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:32,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:32,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:32,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:32,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:19:32,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:32,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:32,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:32,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:19:32,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:32,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:32,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:19:32,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 04:19:32,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:32,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:32,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:32,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:19:32,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:19:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:32,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950631855] [2020-10-14 04:19:32,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:32,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:19:32,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678473106] [2020-10-14 04:19:32,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:19:32,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:32,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:19:32,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:19:32,805 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 6 states. [2020-10-14 04:19:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:45,779 INFO L93 Difference]: Finished difference Result 4271 states and 7178 transitions. [2020-10-14 04:19:45,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:19:45,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 04:19:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:45,797 INFO L225 Difference]: With dead ends: 4271 [2020-10-14 04:19:45,797 INFO L226 Difference]: Without dead ends: 2852 [2020-10-14 04:19:45,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:19:45,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-14 04:19:45,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2848. [2020-10-14 04:19:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-14 04:19:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4329 transitions. [2020-10-14 04:19:45,875 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4329 transitions. Word has length 103 [2020-10-14 04:19:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:45,876 INFO L479 AbstractCegarLoop]: Abstraction has 2848 states and 4329 transitions. [2020-10-14 04:19:45,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:19:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4329 transitions. [2020-10-14 04:19:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 04:19:45,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:45,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:45,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:19:45,885 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:45,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:45,885 INFO L82 PathProgramCache]: Analyzing trace with hash 224689446, now seen corresponding path program 1 times [2020-10-14 04:19:45,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:45,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121064305] [2020-10-14 04:19:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:46,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:47,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:47,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 04:19:47,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:19:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-10-14 04:19:47,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:47,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 04:19:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:19:47,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:47,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:47,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:47,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:47,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:47,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:19:47,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:47,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:47,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:47,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:47,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:47,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 04:19:47,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:47,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 04:19:47,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:47,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 04:19:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:47,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121064305] [2020-10-14 04:19:47,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:47,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:19:47,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553809139] [2020-10-14 04:19:47,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:19:47,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:47,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:19:47,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:47,609 INFO L87 Difference]: Start difference. First operand 2848 states and 4329 transitions. Second operand 5 states. [2020-10-14 04:19:57,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:57,687 INFO L93 Difference]: Finished difference Result 8538 states and 13132 transitions. [2020-10-14 04:19:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:57,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 04:19:57,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:57,718 INFO L225 Difference]: With dead ends: 8538 [2020-10-14 04:19:57,719 INFO L226 Difference]: Without dead ends: 5696 [2020-10-14 04:19:57,726 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 04:19:57,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-14 04:19:57,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5688. [2020-10-14 04:19:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5688 states. [2020-10-14 04:19:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5688 states to 5688 states and 7897 transitions. [2020-10-14 04:19:57,863 INFO L78 Accepts]: Start accepts. Automaton has 5688 states and 7897 transitions. Word has length 183 [2020-10-14 04:19:57,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:57,864 INFO L479 AbstractCegarLoop]: Abstraction has 5688 states and 7897 transitions. [2020-10-14 04:19:57,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:19:57,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5688 states and 7897 transitions. [2020-10-14 04:19:57,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 04:19:57,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:57,869 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:19:57,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:19:57,869 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:57,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:57,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1452745981, now seen corresponding path program 1 times [2020-10-14 04:19:57,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:57,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005211058] [2020-10-14 04:19:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:57,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:57,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:58,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:58,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:00,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:00,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 04:20:00,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:20:00,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2651 [2020-10-14 04:20:00,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:00,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:00,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:00,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:20:00,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:20:00,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:00,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:00,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:00,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:00,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:00,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:00,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:00,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:00,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:00,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:00,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:00,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:00,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:20:00,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:00,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 04:20:00,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:00,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:20:00,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 04:20:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:00,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:00,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:00,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:20:00,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:00,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 04:20:00,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:00,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 04:20:00,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:20:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:20:01,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005211058] [2020-10-14 04:20:01,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:01,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:20:01,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68429591] [2020-10-14 04:20:01,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:01,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:01,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:01,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:01,032 INFO L87 Difference]: Start difference. First operand 5688 states and 7897 transitions. Second operand 7 states. [2020-10-14 04:20:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:12,674 INFO L93 Difference]: Finished difference Result 12995 states and 18862 transitions. [2020-10-14 04:20:12,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:20:12,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-14 04:20:12,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:12,721 INFO L225 Difference]: With dead ends: 12995 [2020-10-14 04:20:12,721 INFO L226 Difference]: Without dead ends: 7313 [2020-10-14 04:20:12,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:20:12,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7313 states. [2020-10-14 04:20:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7313 to 7198. [2020-10-14 04:20:12,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7198 states. [2020-10-14 04:20:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7198 states to 7198 states and 9760 transitions. [2020-10-14 04:20:12,971 INFO L78 Accepts]: Start accepts. Automaton has 7198 states and 9760 transitions. Word has length 192 [2020-10-14 04:20:12,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:12,972 INFO L479 AbstractCegarLoop]: Abstraction has 7198 states and 9760 transitions. [2020-10-14 04:20:12,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 7198 states and 9760 transitions. [2020-10-14 04:20:12,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 04:20:12,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:12,978 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:20:12,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:20:12,978 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:12,979 INFO L82 PathProgramCache]: Analyzing trace with hash -368400161, now seen corresponding path program 1 times [2020-10-14 04:20:12,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:12,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507665740] [2020-10-14 04:20:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:13,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:13,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:13,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 04:20:13,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:13,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 834 [2020-10-14 04:20:13,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:13,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:13,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:13,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:20:13,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:20:13,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:13,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:13,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:13,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:13,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:13,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:13,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:13,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:13,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:13,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:13,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:13,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:20:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:13,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:13,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:13,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:13,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:13,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:20:13,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:13,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:13,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:14,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:20:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:14,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:14,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:20:14,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:14,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 04:20:14,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:14,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:14,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:14,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:14,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:20:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 04:20:14,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507665740] [2020-10-14 04:20:14,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:14,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:14,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581472890] [2020-10-14 04:20:14,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:14,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:14,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:14,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:14,126 INFO L87 Difference]: Start difference. First operand 7198 states and 9760 transitions. Second operand 5 states. [2020-10-14 04:20:25,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:25,407 INFO L93 Difference]: Finished difference Result 20809 states and 28851 transitions. [2020-10-14 04:20:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:25,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-14 04:20:25,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:25,466 INFO L225 Difference]: With dead ends: 20809 [2020-10-14 04:20:25,467 INFO L226 Difference]: Without dead ends: 13617 [2020-10-14 04:20:25,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 04:20:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13617 states. [2020-10-14 04:20:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13617 to 13606. [2020-10-14 04:20:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13606 states. [2020-10-14 04:20:25,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13606 states to 13606 states and 17390 transitions. [2020-10-14 04:20:25,812 INFO L78 Accepts]: Start accepts. Automaton has 13606 states and 17390 transitions. Word has length 194 [2020-10-14 04:20:25,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:25,813 INFO L479 AbstractCegarLoop]: Abstraction has 13606 states and 17390 transitions. [2020-10-14 04:20:25,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:25,814 INFO L276 IsEmpty]: Start isEmpty. Operand 13606 states and 17390 transitions. [2020-10-14 04:20:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 04:20:25,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:25,819 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:20:25,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:20:25,820 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:25,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:25,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1695896062, now seen corresponding path program 1 times [2020-10-14 04:20:25,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:25,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372752980] [2020-10-14 04:20:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:25,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:25,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:27,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:29,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:29,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 04:20:29,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:20:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3631 [2020-10-14 04:20:29,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:29,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:20:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:20:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:29,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:29,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:29,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:29,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:29,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:29,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:29,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:29,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:29,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:29,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:29,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:20:29,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:29,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:20:29,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:29,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:20:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:29,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 04:20:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:29,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:29,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:29,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:20:29,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:29,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 04:20:29,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:29,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:29,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:29,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:20:29,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:20:29,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372752980] [2020-10-14 04:20:29,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:29,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:20:29,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953660083] [2020-10-14 04:20:29,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:29,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:29,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:29,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:29,994 INFO L87 Difference]: Start difference. First operand 13606 states and 17390 transitions. Second operand 7 states. [2020-10-14 04:20:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:41,698 INFO L93 Difference]: Finished difference Result 36786 states and 48575 transitions. [2020-10-14 04:20:41,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:20:41,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-14 04:20:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:41,768 INFO L225 Difference]: With dead ends: 36786 [2020-10-14 04:20:41,769 INFO L226 Difference]: Without dead ends: 18854 [2020-10-14 04:20:41,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:20:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18854 states. [2020-10-14 04:20:42,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18854 to 17403. [2020-10-14 04:20:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17403 states. [2020-10-14 04:20:42,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17403 states to 17403 states and 19813 transitions. [2020-10-14 04:20:42,245 INFO L78 Accepts]: Start accepts. Automaton has 17403 states and 19813 transitions. Word has length 215 [2020-10-14 04:20:42,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:42,246 INFO L479 AbstractCegarLoop]: Abstraction has 17403 states and 19813 transitions. [2020-10-14 04:20:42,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:42,246 INFO L276 IsEmpty]: Start isEmpty. Operand 17403 states and 19813 transitions. [2020-10-14 04:20:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 04:20:42,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:42,252 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:20:42,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:20:42,253 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:42,253 INFO L82 PathProgramCache]: Analyzing trace with hash 531589918, now seen corresponding path program 1 times [2020-10-14 04:20:42,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:42,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345812587] [2020-10-14 04:20:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:43,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:44,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:44,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 04:20:44,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:20:44,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2265 [2020-10-14 04:20:44,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:44,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:20:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 04:20:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:44,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:44,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:44,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:44,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:44,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:44,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:20:44,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:44,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:44,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:44,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:44,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:44,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:44,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:44,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:44,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:44,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 04:20:44,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:44,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:20:44,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:20:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:45,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:45,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:20:45,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:45,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 04:20:45,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:45,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:20:45,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:20:45,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345812587] [2020-10-14 04:20:45,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:45,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:20:45,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494273192] [2020-10-14 04:20:45,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:45,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:45,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:45,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:45,173 INFO L87 Difference]: Start difference. First operand 17403 states and 19813 transitions. Second operand 7 states. [2020-10-14 04:20:54,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:54,648 INFO L93 Difference]: Finished difference Result 45028 states and 52364 transitions. [2020-10-14 04:20:54,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:20:54,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-14 04:20:54,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:54,761 INFO L225 Difference]: With dead ends: 45028 [2020-10-14 04:20:54,761 INFO L226 Difference]: Without dead ends: 27631 [2020-10-14 04:20:54,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:20:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27631 states. [2020-10-14 04:20:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27631 to 26847. [2020-10-14 04:20:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26847 states. [2020-10-14 04:20:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26847 states to 26847 states and 30754 transitions. [2020-10-14 04:20:56,156 INFO L78 Accepts]: Start accepts. Automaton has 26847 states and 30754 transitions. Word has length 231 [2020-10-14 04:20:56,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:56,156 INFO L479 AbstractCegarLoop]: Abstraction has 26847 states and 30754 transitions. [2020-10-14 04:20:56,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 26847 states and 30754 transitions. [2020-10-14 04:20:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-14 04:20:56,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:56,168 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:56,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:20:56,169 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:56,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:56,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1395500709, now seen corresponding path program 1 times [2020-10-14 04:20:56,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:56,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667834326] [2020-10-14 04:20:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:56,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:56,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:57,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:57,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:01,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:01,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-14 04:21:01,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:21:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 04:21:01,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:01,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:21:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 04:21:01,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:01,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:01,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:01,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:01,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:21:01,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:01,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:01,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:01,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:01,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:21:01,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 04:21:01,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:01,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:21:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:01,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 04:21:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:01,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:01,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:01,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 04:21:01,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:01,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 04:21:01,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:01,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:01,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:01,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:01,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:21:01,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:01,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-14 04:21:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:01,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:01,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:21:01,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:01,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 04:21:01,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:01,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 04:21:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:01,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 155 proven. 107 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 04:21:02,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667834326] [2020-10-14 04:21:02,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:02,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:02,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608522460] [2020-10-14 04:21:02,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:02,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:02,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:02,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:02,008 INFO L87 Difference]: Start difference. First operand 26847 states and 30754 transitions. Second operand 7 states. [2020-10-14 04:21:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:12,424 INFO L93 Difference]: Finished difference Result 61781 states and 73533 transitions. [2020-10-14 04:21:12,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:21:12,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-14 04:21:12,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:12,534 INFO L225 Difference]: With dead ends: 61781 [2020-10-14 04:21:12,534 INFO L226 Difference]: Without dead ends: 34940 [2020-10-14 04:21:12,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:21:12,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34940 states. [2020-10-14 04:21:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34940 to 34698. [2020-10-14 04:21:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34698 states. [2020-10-14 04:21:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34698 states to 34698 states and 39161 transitions. [2020-10-14 04:21:13,238 INFO L78 Accepts]: Start accepts. Automaton has 34698 states and 39161 transitions. Word has length 328 [2020-10-14 04:21:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:13,238 INFO L479 AbstractCegarLoop]: Abstraction has 34698 states and 39161 transitions. [2020-10-14 04:21:13,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 34698 states and 39161 transitions. [2020-10-14 04:21:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 04:21:13,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:13,255 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:21:13,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:21:13,256 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:13,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:13,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1782799229, now seen corresponding path program 1 times [2020-10-14 04:21:13,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:13,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373251669] [2020-10-14 04:21:13,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:13,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:14,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:14,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:18,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:18,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-14 04:21:18,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:21:18,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 04:21:18,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:18,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:21:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 04:21:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:18,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:18,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:18,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:18,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:18,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:18,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:18,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:18,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:18,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:18,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:21:18,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 04:21:18,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:18,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:18,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:18,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:21:18,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:18,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:21:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:18,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:18,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:21:18,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 04:21:18,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:18,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:18,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 04:21:18,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:19,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-14 04:21:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:19,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:19,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:21:19,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:19,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 04:21:19,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:19,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:21:19,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:19,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 201 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 04:21:19,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373251669] [2020-10-14 04:21:19,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:19,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:19,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138421227] [2020-10-14 04:21:19,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:19,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:19,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:19,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:19,744 INFO L87 Difference]: Start difference. First operand 34698 states and 39161 transitions. Second operand 7 states. [2020-10-14 04:21:29,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:29,863 INFO L93 Difference]: Finished difference Result 77277 states and 87783 transitions. [2020-10-14 04:21:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:21:29,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-14 04:21:29,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:29,983 INFO L225 Difference]: With dead ends: 77277 [2020-10-14 04:21:29,984 INFO L226 Difference]: Without dead ends: 42585 [2020-10-14 04:21:30,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:30,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42585 states. [2020-10-14 04:21:30,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42585 to 41850. [2020-10-14 04:21:30,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41850 states. [2020-10-14 04:21:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41850 states to 41850 states and 47128 transitions. [2020-10-14 04:21:31,001 INFO L78 Accepts]: Start accepts. Automaton has 41850 states and 47128 transitions. Word has length 376 [2020-10-14 04:21:31,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:31,002 INFO L479 AbstractCegarLoop]: Abstraction has 41850 states and 47128 transitions. [2020-10-14 04:21:31,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:31,002 INFO L276 IsEmpty]: Start isEmpty. Operand 41850 states and 47128 transitions. [2020-10-14 04:21:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-14 04:21:31,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:31,019 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 04:21:31,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:21:31,019 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:31,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1503819177, now seen corresponding path program 1 times [2020-10-14 04:21:31,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:31,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237276859] [2020-10-14 04:21:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:31,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:31,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:31,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:32,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:36,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:36,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-10-14 04:21:36,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:21:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 04:21:36,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:36,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:21:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:21:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:36,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:36,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:36,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:36,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:21:36,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:36,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:36,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:36,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:36,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:36,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:36,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:36,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:21:36,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 04:21:36,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:36,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:21:36,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:36,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:21:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:36,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:36,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:36,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 04:21:36,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 04:21:36,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:36,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 04:21:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-14 04:21:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:36,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:36,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:36,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:21:36,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:36,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:21:36,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:36,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 04:21:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-14 04:21:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:36,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:36,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:21:36,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:36,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 04:21:36,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:36,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:21:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 216 proven. 188 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2020-10-14 04:21:36,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237276859] [2020-10-14 04:21:36,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:36,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:36,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475744854] [2020-10-14 04:21:36,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:36,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:36,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:36,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:36,932 INFO L87 Difference]: Start difference. First operand 41850 states and 47128 transitions. Second operand 7 states. [2020-10-14 04:21:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:47,839 INFO L93 Difference]: Finished difference Result 99953 states and 113905 transitions. [2020-10-14 04:21:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:21:47,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 454 [2020-10-14 04:21:47,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:47,987 INFO L225 Difference]: With dead ends: 99953 [2020-10-14 04:21:47,987 INFO L226 Difference]: Without dead ends: 58109 [2020-10-14 04:21:48,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58109 states. [2020-10-14 04:21:48,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58109 to 56638. [2020-10-14 04:21:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56638 states. [2020-10-14 04:21:49,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56638 states to 56638 states and 62877 transitions. [2020-10-14 04:21:49,176 INFO L78 Accepts]: Start accepts. Automaton has 56638 states and 62877 transitions. Word has length 454 [2020-10-14 04:21:49,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:49,177 INFO L479 AbstractCegarLoop]: Abstraction has 56638 states and 62877 transitions. [2020-10-14 04:21:49,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:49,177 INFO L276 IsEmpty]: Start isEmpty. Operand 56638 states and 62877 transitions. [2020-10-14 04:21:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-14 04:21:49,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:49,194 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:49,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:21:49,195 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:49,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1659789246, now seen corresponding path program 1 times [2020-10-14 04:21:49,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:49,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644605180] [2020-10-14 04:21:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:49,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:50,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:54,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:54,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-14 04:21:54,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:21:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 04:21:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:54,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:21:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-14 04:21:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:54,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:54,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:54,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:54,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:54,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:54,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:54,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:54,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:54,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:54,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:54,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:54,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:54,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:21:54,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:21:54,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:54,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:21:54,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:54,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:21:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:54,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:54,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:54,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 04:21:54,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:54,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 04:21:54,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:54,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:54,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:54,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:54,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 04:21:54,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:54,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-14 04:21:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:54,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:54,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:21:54,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:54,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:21:54,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:54,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:21:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:54,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 201 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 04:21:54,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644605180] [2020-10-14 04:21:54,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:54,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:54,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546512112] [2020-10-14 04:21:54,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:54,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:54,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:54,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:54,979 INFO L87 Difference]: Start difference. First operand 56638 states and 62877 transitions. Second operand 7 states. [2020-10-14 04:22:07,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:07,000 INFO L93 Difference]: Finished difference Result 129667 states and 145791 transitions. [2020-10-14 04:22:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:07,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 459 [2020-10-14 04:22:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:07,240 INFO L225 Difference]: With dead ends: 129667 [2020-10-14 04:22:07,240 INFO L226 Difference]: Without dead ends: 73035 [2020-10-14 04:22:07,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:07,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73035 states. [2020-10-14 04:22:08,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73035 to 72320. [2020-10-14 04:22:08,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72320 states. [2020-10-14 04:22:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72320 states to 72320 states and 79992 transitions. [2020-10-14 04:22:08,356 INFO L78 Accepts]: Start accepts. Automaton has 72320 states and 79992 transitions. Word has length 459 [2020-10-14 04:22:08,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:08,357 INFO L479 AbstractCegarLoop]: Abstraction has 72320 states and 79992 transitions. [2020-10-14 04:22:08,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 72320 states and 79992 transitions. [2020-10-14 04:22:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2020-10-14 04:22:08,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:08,367 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:08,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:22:08,367 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:08,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:08,368 INFO L82 PathProgramCache]: Analyzing trace with hash 490273792, now seen corresponding path program 1 times [2020-10-14 04:22:08,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:08,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535642859] [2020-10-14 04:22:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:08,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:10,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:13,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:13,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 613 [2020-10-14 04:22:13,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:22:13,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 04:22:13,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:13,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 484 [2020-10-14 04:22:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:22:13,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:13,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:13,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:13,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:13,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:13,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:22:13,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:13,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:13,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:13,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:13,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:13,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:14,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:14,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 04:22:14,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:14,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 04:22:14,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:14,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:14,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:14,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:14,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:22:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:14,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:14,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:22:14,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:14,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:22:14,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:14,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:14,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-14 04:22:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:14,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:14,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:22:14,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:14,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:22:14,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:14,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:14,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:14,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 04:22:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:14,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:14,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:22:14,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:22:14,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:14,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:22:14,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:14,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-10-14 04:22:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:14,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:14,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:14,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:22:14,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:14,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 04:22:14,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:14,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:22:14,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-14 04:22:14,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535642859] [2020-10-14 04:22:14,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:14,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:14,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738224959] [2020-10-14 04:22:14,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:14,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:14,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:14,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:14,519 INFO L87 Difference]: Start difference. First operand 72320 states and 79992 transitions. Second operand 7 states. [2020-10-14 04:22:24,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:24,952 INFO L93 Difference]: Finished difference Result 156671 states and 174873 transitions. [2020-10-14 04:22:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:22:24,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 595 [2020-10-14 04:22:24,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:25,216 INFO L225 Difference]: With dead ends: 156671 [2020-10-14 04:22:25,217 INFO L226 Difference]: Without dead ends: 84357 [2020-10-14 04:22:25,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84357 states. [2020-10-14 04:22:26,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84357 to 83639. [2020-10-14 04:22:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83639 states. [2020-10-14 04:22:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83639 states to 83639 states and 92369 transitions. [2020-10-14 04:22:26,248 INFO L78 Accepts]: Start accepts. Automaton has 83639 states and 92369 transitions. Word has length 595 [2020-10-14 04:22:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:26,249 INFO L479 AbstractCegarLoop]: Abstraction has 83639 states and 92369 transitions. [2020-10-14 04:22:26,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:26,249 INFO L276 IsEmpty]: Start isEmpty. Operand 83639 states and 92369 transitions. [2020-10-14 04:22:26,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2020-10-14 04:22:26,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:26,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:26,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:22:26,259 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:26,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:26,259 INFO L82 PathProgramCache]: Analyzing trace with hash -218834287, now seen corresponding path program 1 times [2020-10-14 04:22:26,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:26,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108005685] [2020-10-14 04:22:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:26,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:26,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:26,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:31,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:31,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 697 [2020-10-14 04:22:31,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:22:31,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-14 04:22:31,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:31,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:31,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:31,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 565 [2020-10-14 04:22:31,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 04:22:31,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:31,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:31,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:31,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:31,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:31,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:31,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:22:31,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:31,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:31,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:31,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:31,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:31,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:31,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:22:31,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:31,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 04:22:31,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:31,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:31,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:22:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:31,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:32,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:32,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-14 04:22:32,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:32,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-14 04:22:32,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:32,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 426 [2020-10-14 04:22:32,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:22:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:32,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:32,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 04:22:32,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:32,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 04:22:32,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:32,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 04:22:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:32,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2020-10-14 04:22:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:32,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:32,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:32,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:22:32,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 04:22:32,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:32,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:22:32,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-14 04:22:32,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108005685] [2020-10-14 04:22:32,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:32,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:32,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531479651] [2020-10-14 04:22:32,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:32,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:32,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:32,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:32,989 INFO L87 Difference]: Start difference. First operand 83639 states and 92369 transitions. Second operand 7 states. [2020-10-14 04:22:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:46,578 INFO L93 Difference]: Finished difference Result 189821 states and 216368 transitions. [2020-10-14 04:22:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:22:46,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 681 [2020-10-14 04:22:46,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:46,906 INFO L225 Difference]: With dead ends: 189821 [2020-10-14 04:22:46,906 INFO L226 Difference]: Without dead ends: 106890 [2020-10-14 04:22:47,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:22:47,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106890 states.