/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem11_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 20:58:45,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 20:58:45,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 20:58:45,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 20:58:45,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 20:58:45,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 20:58:45,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 20:58:45,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 20:58:45,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 20:58:45,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 20:58:45,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 20:58:45,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 20:58:45,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 20:58:45,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 20:58:45,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 20:58:45,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 20:58:45,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 20:58:45,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 20:58:45,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 20:58:45,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 20:58:45,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 20:58:45,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 20:58:45,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 20:58:45,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 20:58:45,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 20:58:45,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 20:58:45,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 20:58:45,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 20:58:45,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 20:58:45,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 20:58:45,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 20:58:45,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 20:58:45,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 20:58:45,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 20:58:45,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 20:58:45,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 20:58:45,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 20:58:45,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 20:58:45,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 20:58:45,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 20:58:45,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 20:58:45,560 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 20:58:45,583 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 20:58:45,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 20:58:45,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 20:58:45,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 20:58:45,585 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 20:58:45,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 20:58:45,586 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 20:58:45,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 20:58:45,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 20:58:45,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 20:58:45,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 20:58:45,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 20:58:45,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 20:58:45,588 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 20:58:45,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 20:58:45,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 20:58:45,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 20:58:45,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 20:58:45,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 20:58:45,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 20:58:45,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 20:58:45,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 20:58:45,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 20:58:45,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 20:58:45,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 20:58:45,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 20:58:45,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 20:58:45,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 20:58:45,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 20:58:45,591 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 20:58:45,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 20:58:45,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 20:58:45,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 20:58:45,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 20:58:45,933 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 20:58:45,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label24.c [2020-10-14 20:58:46,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbd6712a4/f83a4aee0548417ca0e8abe06634d24c/FLAG5b94f8463 [2020-10-14 20:58:46,692 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 20:58:46,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label24.c [2020-10-14 20:58:46,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbd6712a4/f83a4aee0548417ca0e8abe06634d24c/FLAG5b94f8463 [2020-10-14 20:58:46,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbd6712a4/f83a4aee0548417ca0e8abe06634d24c [2020-10-14 20:58:46,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 20:58:46,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 20:58:46,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 20:58:46,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 20:58:46,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 20:58:46,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:58:46" (1/1) ... [2020-10-14 20:58:46,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:46, skipping insertion in model container [2020-10-14 20:58:46,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:58:46" (1/1) ... [2020-10-14 20:58:46,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 20:58:46,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 20:58:47,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:58:47,699 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 20:58:48,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:58:48,031 INFO L208 MainTranslator]: Completed translation [2020-10-14 20:58:48,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:48 WrapperNode [2020-10-14 20:58:48,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 20:58:48,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 20:58:48,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 20:58:48,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 20:58:48,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:48" (1/1) ... [2020-10-14 20:58:48,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:48" (1/1) ... [2020-10-14 20:58:48,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:48" (1/1) ... [2020-10-14 20:58:48,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:48" (1/1) ... [2020-10-14 20:58:48,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:48" (1/1) ... [2020-10-14 20:58:48,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:48" (1/1) ... [2020-10-14 20:58:48,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:48" (1/1) ... [2020-10-14 20:58:48,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 20:58:48,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 20:58:48,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 20:58:48,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 20:58:48,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:48" (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 20:58:48,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 20:58:48,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 20:58:48,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 20:58:48,318 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 20:58:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 20:58:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 20:58:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 20:58:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 20:58:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 20:58:48,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 20:58:48,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 20:58:50,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 20:58:50,078 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 20:58:50,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:58:50 BoogieIcfgContainer [2020-10-14 20:58:50,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 20:58:50,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 20:58:50,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 20:58:50,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 20:58:50,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:58:46" (1/3) ... [2020-10-14 20:58:50,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc0b8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:58:50, skipping insertion in model container [2020-10-14 20:58:50,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:48" (2/3) ... [2020-10-14 20:58:50,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc0b8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:58:50, skipping insertion in model container [2020-10-14 20:58:50,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:58:50" (3/3) ... [2020-10-14 20:58:50,095 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label24.c [2020-10-14 20:58:50,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 20:58:50,115 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 20:58:50,129 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 20:58:50,157 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 20:58:50,157 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 20:58:50,157 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 20:58:50,158 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 20:58:50,158 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 20:58:50,158 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 20:58:50,158 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 20:58:50,158 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 20:58:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 20:58:50,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 20:58:50,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:50,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:58:50,201 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:50,207 INFO L82 PathProgramCache]: Analyzing trace with hash 882315618, now seen corresponding path program 1 times [2020-10-14 20:58:50,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:50,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084257880] [2020-10-14 20:58:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:50,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:50,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:50,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 20:58:50,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-14 20:58:50,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:50,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:58:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:58:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 20:58:50,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 20:58:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:51,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:51,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:51,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:51,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 20:58:51,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:51,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:58:51,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:51,086 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 20:58:51,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084257880] [2020-10-14 20:58:51,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:58:51,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 20:58:51,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013273449] [2020-10-14 20:58:51,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:58:51,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:51,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:58:51,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:58:51,114 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2020-10-14 20:58:53,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:53,701 INFO L93 Difference]: Finished difference Result 793 states and 1394 transitions. [2020-10-14 20:58:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:58:53,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-14 20:58:53,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:53,742 INFO L225 Difference]: With dead ends: 793 [2020-10-14 20:58:53,742 INFO L226 Difference]: Without dead ends: 437 [2020-10-14 20:58:53,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 20:58:53,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-14 20:58:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 422. [2020-10-14 20:58:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-14 20:58:53,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 673 transitions. [2020-10-14 20:58:53,852 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 673 transitions. Word has length 57 [2020-10-14 20:58:53,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:53,853 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 673 transitions. [2020-10-14 20:58:53,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:58:53,853 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 673 transitions. [2020-10-14 20:58:53,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 20:58:53,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:53,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 20:58:53,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 20:58:53,863 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:53,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:53,863 INFO L82 PathProgramCache]: Analyzing trace with hash 271821993, now seen corresponding path program 1 times [2020-10-14 20:58:53,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:53,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945940851] [2020-10-14 20:58:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:53,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:54,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:55,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:55,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:55,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 20:58:55,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:58:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1550 [2020-10-14 20:58:55,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:55,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:55,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:58:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:58:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 20:58:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:55,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:55,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:55,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:55,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:55,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:55,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:58:55,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:55,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:58:55,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:55,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:55,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 20:58:55,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:55,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 20:58:55,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:55,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 20:58:55,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:58:55,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945940851] [2020-10-14 20:58:55,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:58:55,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 20:58:55,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105056240] [2020-10-14 20:58:55,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:58:55,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:55,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:58:55,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:58:55,798 INFO L87 Difference]: Start difference. First operand 422 states and 673 transitions. Second operand 7 states. [2020-10-14 20:58:58,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:58,435 INFO L93 Difference]: Finished difference Result 1276 states and 2114 transitions. [2020-10-14 20:58:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:58:58,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-14 20:58:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:58,444 INFO L225 Difference]: With dead ends: 1276 [2020-10-14 20:58:58,444 INFO L226 Difference]: Without dead ends: 860 [2020-10-14 20:58:58,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:58:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2020-10-14 20:58:58,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 814. [2020-10-14 20:58:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-10-14 20:58:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1164 transitions. [2020-10-14 20:58:58,538 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1164 transitions. Word has length 126 [2020-10-14 20:58:58,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:58,539 INFO L479 AbstractCegarLoop]: Abstraction has 814 states and 1164 transitions. [2020-10-14 20:58:58,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:58:58,540 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1164 transitions. [2020-10-14 20:58:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 20:58:58,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:58,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 20:58:58,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 20:58:58,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:58,550 INFO L82 PathProgramCache]: Analyzing trace with hash -2073948734, now seen corresponding path program 1 times [2020-10-14 20:58:58,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:58,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685511886] [2020-10-14 20:58:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:58,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:59,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:00,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:00,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 20:59:00,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:59:00,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1409 [2020-10-14 20:59:00,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:00,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:59:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:59:00,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 20:59:00,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:00,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:00,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:00,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:00,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:00,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:59:00,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:00,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:59:00,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 31 [2020-10-14 20:59:00,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:00,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:00,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:00,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 20:59:00,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:00,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 20:59:00,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:00,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 20:59:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:59:00,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685511886] [2020-10-14 20:59:00,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:59:00,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 20:59:00,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951600801] [2020-10-14 20:59:00,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:00,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:00,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:00,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:00,336 INFO L87 Difference]: Start difference. First operand 814 states and 1164 transitions. Second operand 7 states. [2020-10-14 20:59:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:03,033 INFO L93 Difference]: Finished difference Result 2063 states and 3003 transitions. [2020-10-14 20:59:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:59:03,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-14 20:59:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:03,043 INFO L225 Difference]: With dead ends: 2063 [2020-10-14 20:59:03,044 INFO L226 Difference]: Without dead ends: 1255 [2020-10-14 20:59:03,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:59:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-10-14 20:59:03,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1213. [2020-10-14 20:59:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-14 20:59:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1671 transitions. [2020-10-14 20:59:03,090 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1671 transitions. Word has length 129 [2020-10-14 20:59:03,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:03,091 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1671 transitions. [2020-10-14 20:59:03,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1671 transitions. [2020-10-14 20:59:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 20:59:03,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:03,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:03,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 20:59:03,096 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:03,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:03,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1271598113, now seen corresponding path program 1 times [2020-10-14 20:59:03,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:03,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971776897] [2020-10-14 20:59:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:04,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 20:59:04,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:04,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-10-14 20:59:04,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:04,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 20:59:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:59:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 20:59:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 20:59:04,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:04,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:04,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:04,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 20:59:04,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:04,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:04,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:04,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:04,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:59:04,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:04,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:04,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:04,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:59:04,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:04,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-14 20:59:04,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:04,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 20:59:04,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 20:59:05,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971776897] [2020-10-14 20:59:05,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:05,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:59:05,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737735496] [2020-10-14 20:59:05,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:05,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:05,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:05,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:05,147 INFO L87 Difference]: Start difference. First operand 1213 states and 1671 transitions. Second operand 7 states. [2020-10-14 20:59:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:07,727 INFO L93 Difference]: Finished difference Result 2870 states and 4130 transitions. [2020-10-14 20:59:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 20:59:07,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-14 20:59:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:07,744 INFO L225 Difference]: With dead ends: 2870 [2020-10-14 20:59:07,744 INFO L226 Difference]: Without dead ends: 1663 [2020-10-14 20:59:07,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 20:59:07,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2020-10-14 20:59:07,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1414. [2020-10-14 20:59:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1414 states. [2020-10-14 20:59:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 1862 transitions. [2020-10-14 20:59:07,796 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 1862 transitions. Word has length 178 [2020-10-14 20:59:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:07,797 INFO L479 AbstractCegarLoop]: Abstraction has 1414 states and 1862 transitions. [2020-10-14 20:59:07,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 1862 transitions. [2020-10-14 20:59:07,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 20:59:07,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:07,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:59:07,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 20:59:07,802 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:07,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1073739768, now seen corresponding path program 1 times [2020-10-14 20:59:07,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:07,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854414305] [2020-10-14 20:59:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:07,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:07,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:08,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:09,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:09,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-14 20:59:09,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:59:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1653 [2020-10-14 20:59:09,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:09,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 20:59:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 20:59:09,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:09,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:09,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:09,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:09,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:09,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:09,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:59:09,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:09,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:09,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:09,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:09,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:09,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:59:09,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:09,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 20:59:09,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:09,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:09,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:09,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:59:09,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 20:59:09,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:59:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:09,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:09,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 20:59:09,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:09,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 20:59:09,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:09,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:09,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:09,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 20:59:09,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:59:10,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854414305] [2020-10-14 20:59:10,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:10,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:10,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324269274] [2020-10-14 20:59:10,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:10,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:10,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:10,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:10,118 INFO L87 Difference]: Start difference. First operand 1414 states and 1862 transitions. Second operand 7 states. [2020-10-14 20:59:12,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:12,360 INFO L93 Difference]: Finished difference Result 2881 states and 3986 transitions. [2020-10-14 20:59:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 20:59:12,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-14 20:59:12,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:12,376 INFO L225 Difference]: With dead ends: 2881 [2020-10-14 20:59:12,377 INFO L226 Difference]: Without dead ends: 1851 [2020-10-14 20:59:12,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:59:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-10-14 20:59:12,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1827. [2020-10-14 20:59:12,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2020-10-14 20:59:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2407 transitions. [2020-10-14 20:59:12,445 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2407 transitions. Word has length 245 [2020-10-14 20:59:12,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:12,445 INFO L479 AbstractCegarLoop]: Abstraction has 1827 states and 2407 transitions. [2020-10-14 20:59:12,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:12,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2407 transitions. [2020-10-14 20:59:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 20:59:12,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:12,451 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 20:59:12,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 20:59:12,452 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:12,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:12,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1439439467, now seen corresponding path program 1 times [2020-10-14 20:59:12,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:12,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196132661] [2020-10-14 20:59:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:12,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:14,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:14,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:14,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 20:59:14,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:59:14,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1891 [2020-10-14 20:59:14,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:14,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 20:59:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:59:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-14 20:59:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:14,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:14,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:14,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:14,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:14,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 20:59:14,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:14,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:14,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:14,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:59:14,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:14,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:14,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:14,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:14,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:59:14,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:14,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 20:59:14,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:14,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:59:14,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:14,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:59:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:15,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:15,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:59:15,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 20:59:15,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:15,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:59:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 20:59:15,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 162 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 20:59:15,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196132661] [2020-10-14 20:59:15,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:15,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:59:15,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045167840] [2020-10-14 20:59:15,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:59:15,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:15,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:59:15,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:59:15,225 INFO L87 Difference]: Start difference. First operand 1827 states and 2407 transitions. Second operand 8 states. [2020-10-14 20:59:18,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:18,311 INFO L93 Difference]: Finished difference Result 4136 states and 5960 transitions. [2020-10-14 20:59:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 20:59:18,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 246 [2020-10-14 20:59:18,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:18,329 INFO L225 Difference]: With dead ends: 4136 [2020-10-14 20:59:18,329 INFO L226 Difference]: Without dead ends: 2679 [2020-10-14 20:59:18,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-14 20:59:18,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2020-10-14 20:59:18,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2632. [2020-10-14 20:59:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2632 states. [2020-10-14 20:59:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2632 states to 2632 states and 3461 transitions. [2020-10-14 20:59:18,419 INFO L78 Accepts]: Start accepts. Automaton has 2632 states and 3461 transitions. Word has length 246 [2020-10-14 20:59:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:18,420 INFO L479 AbstractCegarLoop]: Abstraction has 2632 states and 3461 transitions. [2020-10-14 20:59:18,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:59:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2632 states and 3461 transitions. [2020-10-14 20:59:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-14 20:59:18,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:18,426 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:59:18,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 20:59:18,427 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:18,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:18,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1969507313, now seen corresponding path program 1 times [2020-10-14 20:59:18,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:18,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149642739] [2020-10-14 20:59:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:19,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:20,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:20,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 20:59:20,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:59:20,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2096 [2020-10-14 20:59:20,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:20,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:59:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 20:59:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:20,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:20,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:20,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:20,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:20,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:20,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:59:20,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:20,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:20,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:20,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:20,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:20,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:20,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:20,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:59:20,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:20,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 20:59:20,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:20,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:20,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:20,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:59:20,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:20,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:59:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:21,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:21,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 20:59:21,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:21,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 20:59:21,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:21,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 20:59:21,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:59:21,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149642739] [2020-10-14 20:59:21,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:21,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:21,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008274955] [2020-10-14 20:59:21,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:21,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:21,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:21,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:21,220 INFO L87 Difference]: Start difference. First operand 2632 states and 3461 transitions. Second operand 7 states. [2020-10-14 20:59:25,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:25,195 INFO L93 Difference]: Finished difference Result 7080 states and 9801 transitions. [2020-10-14 20:59:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:59:25,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-14 20:59:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:25,223 INFO L225 Difference]: With dead ends: 7080 [2020-10-14 20:59:25,223 INFO L226 Difference]: Without dead ends: 4832 [2020-10-14 20:59:25,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:59:25,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2020-10-14 20:59:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 4410. [2020-10-14 20:59:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4410 states. [2020-10-14 20:59:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 5626 transitions. [2020-10-14 20:59:25,350 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 5626 transitions. Word has length 257 [2020-10-14 20:59:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:25,352 INFO L479 AbstractCegarLoop]: Abstraction has 4410 states and 5626 transitions. [2020-10-14 20:59:25,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 5626 transitions. [2020-10-14 20:59:25,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-14 20:59:25,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:25,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 20:59:25,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 20:59:25,367 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:25,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:25,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1806896689, now seen corresponding path program 1 times [2020-10-14 20:59:25,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:25,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605597803] [2020-10-14 20:59:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:25,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:27,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:27,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-14 20:59:27,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2319 [2020-10-14 20:59:27,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:27,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 20:59:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 20:59:27,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:27,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:27,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:27,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:27,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:27,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:59:27,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:27,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:27,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:27,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:27,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:27,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:59:27,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 20:59:27,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:27,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:59:27,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:28,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:59:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:28,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:28,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:28,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:59:28,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 20:59:28,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:28,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:59:28,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:28,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-14 20:59:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:28,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:28,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:59:28,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:28,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 20:59:28,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:28,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 20:59:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:28,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 237 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 20:59:28,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605597803] [2020-10-14 20:59:28,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:28,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:28,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133266964] [2020-10-14 20:59:28,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:28,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:28,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:28,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:28,447 INFO L87 Difference]: Start difference. First operand 4410 states and 5626 transitions. Second operand 7 states. [2020-10-14 20:59:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:31,127 INFO L93 Difference]: Finished difference Result 10392 states and 13817 transitions. [2020-10-14 20:59:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:59:31,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-14 20:59:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:31,163 INFO L225 Difference]: With dead ends: 10392 [2020-10-14 20:59:31,163 INFO L226 Difference]: Without dead ends: 6372 [2020-10-14 20:59:31,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:59:31,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6372 states. [2020-10-14 20:59:31,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6372 to 6357. [2020-10-14 20:59:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6357 states. [2020-10-14 20:59:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6357 states to 6357 states and 8316 transitions. [2020-10-14 20:59:31,364 INFO L78 Accepts]: Start accepts. Automaton has 6357 states and 8316 transitions. Word has length 332 [2020-10-14 20:59:31,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:31,365 INFO L479 AbstractCegarLoop]: Abstraction has 6357 states and 8316 transitions. [2020-10-14 20:59:31,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 6357 states and 8316 transitions. [2020-10-14 20:59:31,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-14 20:59:31,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:31,380 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 20:59:31,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 20:59:31,380 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:31,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1642722523, now seen corresponding path program 1 times [2020-10-14 20:59:31,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:31,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195227051] [2020-10-14 20:59:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:32,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:32,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-14 20:59:32,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:32,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-14 20:59:32,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:32,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 20:59:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 20:59:32,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:32,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:32,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:32,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:59:32,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:32,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:32,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:32,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:32,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:59:32,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:32,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 20:59:32,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:32,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:32,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:59:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:32,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:32,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:59:32,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:32,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 20:59:32,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:32,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:59:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:59:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:32,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:32,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:59:32,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 20:59:32,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:32,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 20:59:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 20:59:32,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195227051] [2020-10-14 20:59:32,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:32,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:32,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274902933] [2020-10-14 20:59:32,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:32,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:32,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:32,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:32,750 INFO L87 Difference]: Start difference. First operand 6357 states and 8316 transitions. Second operand 7 states. [2020-10-14 20:59:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:35,527 INFO L93 Difference]: Finished difference Result 11369 states and 15166 transitions. [2020-10-14 20:59:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:59:35,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-14 20:59:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:35,567 INFO L225 Difference]: With dead ends: 11369 [2020-10-14 20:59:35,567 INFO L226 Difference]: Without dead ends: 6954 [2020-10-14 20:59:35,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:59:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6954 states. [2020-10-14 20:59:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6954 to 6939. [2020-10-14 20:59:35,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6939 states. [2020-10-14 20:59:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6939 states to 6939 states and 9009 transitions. [2020-10-14 20:59:35,905 INFO L78 Accepts]: Start accepts. Automaton has 6939 states and 9009 transitions. Word has length 342 [2020-10-14 20:59:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:35,906 INFO L479 AbstractCegarLoop]: Abstraction has 6939 states and 9009 transitions. [2020-10-14 20:59:35,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 6939 states and 9009 transitions. [2020-10-14 20:59:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-14 20:59:35,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:35,921 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:59:35,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 20:59:35,921 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:35,922 INFO L82 PathProgramCache]: Analyzing trace with hash -437779539, now seen corresponding path program 1 times [2020-10-14 20:59:35,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:35,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157991109] [2020-10-14 20:59:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:36,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:36,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:36,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:37,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:37,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-14 20:59:37,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:59:37,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-14 20:59:37,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:37,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:37,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:37,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:59:37,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-14 20:59:37,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:37,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:37,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:37,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:37,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 20:59:37,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:37,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:37,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:59:37,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:37,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:37,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:37,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:59:37,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:37,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 20:59:37,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:37,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 20:59:37,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:59:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:37,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:37,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:37,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 20:59:37,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:37,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 20:59:37,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:37,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:37,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:37,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 20:59:37,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 20:59:37,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 20:59:38,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157991109] [2020-10-14 20:59:38,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:59:38,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 20:59:38,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058683819] [2020-10-14 20:59:38,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:59:38,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:38,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:59:38,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:59:38,178 INFO L87 Difference]: Start difference. First operand 6939 states and 9009 transitions. Second operand 6 states. [2020-10-14 20:59:39,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:39,641 INFO L93 Difference]: Finished difference Result 11928 states and 15754 transitions. [2020-10-14 20:59:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:59:39,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 347 [2020-10-14 20:59:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:39,686 INFO L225 Difference]: With dead ends: 11928 [2020-10-14 20:59:39,686 INFO L226 Difference]: Without dead ends: 6931 [2020-10-14 20:59:39,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:39,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6931 states. [2020-10-14 20:59:39,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6931 to 6923. [2020-10-14 20:59:39,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6923 states. [2020-10-14 20:59:39,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6923 states to 6923 states and 8974 transitions. [2020-10-14 20:59:39,858 INFO L78 Accepts]: Start accepts. Automaton has 6923 states and 8974 transitions. Word has length 347 [2020-10-14 20:59:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:39,859 INFO L479 AbstractCegarLoop]: Abstraction has 6923 states and 8974 transitions. [2020-10-14 20:59:39,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:59:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 6923 states and 8974 transitions. [2020-10-14 20:59:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-14 20:59:39,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:39,879 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:59:39,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 20:59:39,879 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:39,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:39,880 INFO L82 PathProgramCache]: Analyzing trace with hash -979814122, now seen corresponding path program 1 times [2020-10-14 20:59:39,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:39,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62563151] [2020-10-14 20:59:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:42,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:42,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 20:59:42,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:42,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2122 [2020-10-14 20:59:42,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:42,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:59:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:59:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:42,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:42,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:42,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:42,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:42,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:42,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:59:42,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:42,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:42,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:42,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:42,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:42,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:42,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:59:42,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:42,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 20:59:42,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:42,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:59:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:42,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:59:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:42,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:42,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:42,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 20:59:42,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:42,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 20:59:42,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:42,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 20:59:42,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:42,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 20:59:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:42,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:42,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:42,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:59:42,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:59:42,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:42,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 20:59:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:42,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 258 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 20:59:42,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62563151] [2020-10-14 20:59:42,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:42,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:42,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431733903] [2020-10-14 20:59:42,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:42,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:42,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:42,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:42,737 INFO L87 Difference]: Start difference. First operand 6923 states and 8974 transitions. Second operand 7 states. [2020-10-14 20:59:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:45,462 INFO L93 Difference]: Finished difference Result 16907 states and 22172 transitions. [2020-10-14 20:59:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:59:45,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-14 20:59:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:45,503 INFO L225 Difference]: With dead ends: 16907 [2020-10-14 20:59:45,504 INFO L226 Difference]: Without dead ends: 10374 [2020-10-14 20:59:45,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:59:45,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10374 states. [2020-10-14 20:59:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10374 to 10357. [2020-10-14 20:59:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10357 states. [2020-10-14 20:59:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 13342 transitions. [2020-10-14 20:59:45,772 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 13342 transitions. Word has length 368 [2020-10-14 20:59:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:45,773 INFO L479 AbstractCegarLoop]: Abstraction has 10357 states and 13342 transitions. [2020-10-14 20:59:45,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 13342 transitions. [2020-10-14 20:59:45,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-14 20:59:45,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:45,792 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 20:59:45,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 20:59:45,793 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:45,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1882327131, now seen corresponding path program 1 times [2020-10-14 20:59:45,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:45,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29335531] [2020-10-14 20:59:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:46,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:47,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:47,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-14 20:59:47,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:59:47,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2026 [2020-10-14 20:59:47,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:47,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:59:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 20:59:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 20:59:47,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:47,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:47,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:47,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:47,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:47,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:47,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:59:47,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:47,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:48,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:48,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:48,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:48,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:59:48,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 20:59:48,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:48,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:48,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:48,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:59:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:48,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:48,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:48,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:59:48,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 20:59:48,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:48,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:59:48,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:48,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:59:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:48,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:48,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:48,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 20:59:48,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:48,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 20:59:48,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:48,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:48,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:48,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 20:59:48,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 156 proven. 5 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-14 20:59:48,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29335531] [2020-10-14 20:59:48,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:48,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:59:48,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062444849] [2020-10-14 20:59:48,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:59:48,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:48,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:59:48,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:59:48,485 INFO L87 Difference]: Start difference. First operand 10357 states and 13342 transitions. Second operand 6 states. [2020-10-14 20:59:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:51,302 INFO L93 Difference]: Finished difference Result 20900 states and 28074 transitions. [2020-10-14 20:59:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:59:51,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 371 [2020-10-14 20:59:51,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:51,350 INFO L225 Difference]: With dead ends: 20900 [2020-10-14 20:59:51,350 INFO L226 Difference]: Without dead ends: 13247 [2020-10-14 20:59:51,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:59:51,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13247 states. [2020-10-14 20:59:51,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13247 to 13230. [2020-10-14 20:59:51,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13230 states. [2020-10-14 20:59:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13230 states to 13230 states and 16979 transitions. [2020-10-14 20:59:51,675 INFO L78 Accepts]: Start accepts. Automaton has 13230 states and 16979 transitions. Word has length 371 [2020-10-14 20:59:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:51,676 INFO L479 AbstractCegarLoop]: Abstraction has 13230 states and 16979 transitions. [2020-10-14 20:59:51,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:59:51,676 INFO L276 IsEmpty]: Start isEmpty. Operand 13230 states and 16979 transitions. [2020-10-14 20:59:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-14 20:59:51,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:51,690 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:59:51,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 20:59:51,690 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:51,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:51,692 INFO L82 PathProgramCache]: Analyzing trace with hash -371354503, now seen corresponding path program 1 times [2020-10-14 20:59:51,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:51,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060547422] [2020-10-14 20:59:51,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:51,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:52,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:52,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-14 20:59:52,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:52,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-14 20:59:52,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:52,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:52,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-14 20:59:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 20:59:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:52,570 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-14 20:59:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:52,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:52,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:52,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:59:52,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:52,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:52,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:52,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:52,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:52,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:52,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:59:52,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 20:59:52,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:52,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:52,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:59:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:52,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:52,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:52,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 20:59:52,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:52,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 20:59:52,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:52,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 20:59:52,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 20:59:53,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060547422] [2020-10-14 20:59:53,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:53,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:59:53,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247578986] [2020-10-14 20:59:53,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:59:53,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:53,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:59:53,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:59:53,038 INFO L87 Difference]: Start difference. First operand 13230 states and 16979 transitions. Second operand 5 states. [2020-10-14 20:59:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:55,556 INFO L93 Difference]: Finished difference Result 26290 states and 33887 transitions. [2020-10-14 20:59:55,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:59:55,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 371 [2020-10-14 20:59:55,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:55,615 INFO L225 Difference]: With dead ends: 26290 [2020-10-14 20:59:55,615 INFO L226 Difference]: Without dead ends: 15764 [2020-10-14 20:59:55,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:59:55,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15764 states. [2020-10-14 20:59:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15764 to 15748. [2020-10-14 20:59:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15748 states. [2020-10-14 20:59:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15748 states to 15748 states and 19911 transitions. [2020-10-14 20:59:55,954 INFO L78 Accepts]: Start accepts. Automaton has 15748 states and 19911 transitions. Word has length 371 [2020-10-14 20:59:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:55,955 INFO L479 AbstractCegarLoop]: Abstraction has 15748 states and 19911 transitions. [2020-10-14 20:59:55,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:59:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 15748 states and 19911 transitions. [2020-10-14 20:59:55,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-14 20:59:55,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:55,972 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 20:59:55,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 20:59:55,972 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:55,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:55,972 INFO L82 PathProgramCache]: Analyzing trace with hash -229973815, now seen corresponding path program 1 times [2020-10-14 20:59:55,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:55,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783257791] [2020-10-14 20:59:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:56,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:58,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:58,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-14 20:59:58,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:58,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2721 [2020-10-14 20:59:58,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:58,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 20:59:58,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:59:58,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-14 20:59:58,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:58,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:58,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:58,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 20:59:58,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:58,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:59:58,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:59,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:59,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:59:59,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:59,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 20:59:59,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:59,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:59,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 20:59:59,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:59,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:59:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:59,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:59,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:59:59,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 20:59:59,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:59,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:59:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:59:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:59:59,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:59:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:59,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:59,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:59:59,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:59,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 20:59:59,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:59,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:59,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:59,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 20:59:59,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 152 proven. 285 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 20:59:59,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783257791] [2020-10-14 20:59:59,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:59,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 20:59:59,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619905297] [2020-10-14 20:59:59,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 20:59:59,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:59,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 20:59:59,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:59:59,733 INFO L87 Difference]: Start difference. First operand 15748 states and 19911 transitions. Second operand 11 states. [2020-10-14 21:00:02,960 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-14 21:00:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:04,142 INFO L93 Difference]: Finished difference Result 33029 states and 43132 transitions. [2020-10-14 21:00:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 21:00:04,143 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 390 [2020-10-14 21:00:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:04,207 INFO L225 Difference]: With dead ends: 33029 [2020-10-14 21:00:04,207 INFO L226 Difference]: Without dead ends: 19213 [2020-10-14 21:00:04,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-14 21:00:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19213 states. [2020-10-14 21:00:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19213 to 18644. [2020-10-14 21:00:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18644 states. [2020-10-14 21:00:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18644 states to 18644 states and 23351 transitions. [2020-10-14 21:00:04,691 INFO L78 Accepts]: Start accepts. Automaton has 18644 states and 23351 transitions. Word has length 390 [2020-10-14 21:00:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:04,692 INFO L479 AbstractCegarLoop]: Abstraction has 18644 states and 23351 transitions. [2020-10-14 21:00:04,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 21:00:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 18644 states and 23351 transitions. [2020-10-14 21:00:04,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-14 21:00:04,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:04,712 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:00:04,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 21:00:04,713 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:04,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:04,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1270460692, now seen corresponding path program 1 times [2020-10-14 21:00:04,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:04,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889797745] [2020-10-14 21:00:04,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:06,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-14 21:00:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:00:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1515 [2020-10-14 21:00:06,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:06,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:00:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 21:00:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-14 21:00:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:06,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:06,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:06,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:06,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:00:06,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:06,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:06,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:06,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:06,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:00:06,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:06,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 21:00:06,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:06,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:06,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:06,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:00:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:06,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:06,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:00:06,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 21:00:06,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:06,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:00:06,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:06,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 21:00:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:06,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:06,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:06,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 21:00:06,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 21:00:06,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:06,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 21:00:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 308 proven. 51 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 21:00:06,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889797745] [2020-10-14 21:00:06,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:06,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:00:06,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157123720] [2020-10-14 21:00:06,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:00:06,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:06,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:00:06,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:00:06,902 INFO L87 Difference]: Start difference. First operand 18644 states and 23351 transitions. Second operand 6 states. [2020-10-14 21:00:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:09,745 INFO L93 Difference]: Finished difference Result 35746 states and 45165 transitions. [2020-10-14 21:00:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:00:09,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 421 [2020-10-14 21:00:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:09,809 INFO L225 Difference]: With dead ends: 35746 [2020-10-14 21:00:09,810 INFO L226 Difference]: Without dead ends: 20200 [2020-10-14 21:00:09,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:00:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20200 states. [2020-10-14 21:00:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20200 to 19985. [2020-10-14 21:00:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19985 states. [2020-10-14 21:00:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19985 states to 19985 states and 24928 transitions. [2020-10-14 21:00:10,280 INFO L78 Accepts]: Start accepts. Automaton has 19985 states and 24928 transitions. Word has length 421 [2020-10-14 21:00:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:10,281 INFO L479 AbstractCegarLoop]: Abstraction has 19985 states and 24928 transitions. [2020-10-14 21:00:10,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:00:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 19985 states and 24928 transitions. [2020-10-14 21:00:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-14 21:00:10,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:10,299 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:00:10,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 21:00:10,300 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:10,300 INFO L82 PathProgramCache]: Analyzing trace with hash -313806436, now seen corresponding path program 1 times [2020-10-14 21:00:10,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:10,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072050330] [2020-10-14 21:00:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:10,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:10,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:11,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:11,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:11,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-14 21:00:11,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:00:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1310 [2020-10-14 21:00:11,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:11,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-14 21:00:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:00:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:11,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:11,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:11,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:11,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:11,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:11,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:00:11,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:11,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:11,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:11,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:11,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:11,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:11,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:11,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:11,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:00:11,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:11,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 21:00:11,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:11,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:11,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:11,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:11,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:00:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:12,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:12,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 21:00:12,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:12,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 21:00:12,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:12,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 21:00:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:12,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 21:00:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:12,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:12,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:12,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 21:00:12,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:12,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 21:00:12,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:12,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 21:00:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-14 21:00:12,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072050330] [2020-10-14 21:00:12,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:12,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:00:12,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736302537] [2020-10-14 21:00:12,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:00:12,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:12,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:00:12,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:00:12,508 INFO L87 Difference]: Start difference. First operand 19985 states and 24928 transitions. Second operand 7 states. [2020-10-14 21:00:15,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:15,753 INFO L93 Difference]: Finished difference Result 40398 states and 50559 transitions. [2020-10-14 21:00:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:00:15,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2020-10-14 21:00:15,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:15,812 INFO L225 Difference]: With dead ends: 40398 [2020-10-14 21:00:15,813 INFO L226 Difference]: Without dead ends: 20803 [2020-10-14 21:00:15,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:00:15,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20803 states. [2020-10-14 21:00:16,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20803 to 20555. [2020-10-14 21:00:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20555 states. [2020-10-14 21:00:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20555 states to 20555 states and 25196 transitions. [2020-10-14 21:00:16,187 INFO L78 Accepts]: Start accepts. Automaton has 20555 states and 25196 transitions. Word has length 422 [2020-10-14 21:00:16,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:16,188 INFO L479 AbstractCegarLoop]: Abstraction has 20555 states and 25196 transitions. [2020-10-14 21:00:16,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:00:16,188 INFO L276 IsEmpty]: Start isEmpty. Operand 20555 states and 25196 transitions. [2020-10-14 21:00:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2020-10-14 21:00:16,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:16,206 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:00:16,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 21:00:16,207 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:16,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:16,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1455819450, now seen corresponding path program 1 times [2020-10-14 21:00:16,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:16,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562803602] [2020-10-14 21:00:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:16,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:16,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:16,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 458 [2020-10-14 21:00:16,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-14 21:00:16,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:16,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-14 21:00:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:00:16,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:16,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:16,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:16,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:16,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:00:16,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:16,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:16,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:16,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:00:16,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:16,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 21:00:16,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:16,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:16,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:00:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:17,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:17,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:17,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 21:00:17,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 21:00:17,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:17,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 21:00:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:17,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-14 21:00:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:17,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:17,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:00:17,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:17,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 21:00:17,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:17,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:00:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-14 21:00:17,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562803602] [2020-10-14 21:00:17,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:17,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:00:17,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894006392] [2020-10-14 21:00:17,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:00:17,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:17,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:00:17,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:00:17,641 INFO L87 Difference]: Start difference. First operand 20555 states and 25196 transitions. Second operand 7 states. [2020-10-14 21:00:20,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:20,633 INFO L93 Difference]: Finished difference Result 37858 states and 46619 transitions. [2020-10-14 21:00:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:00:20,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 444 [2020-10-14 21:00:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:20,700 INFO L225 Difference]: With dead ends: 37858 [2020-10-14 21:00:20,701 INFO L226 Difference]: Without dead ends: 20389 [2020-10-14 21:00:20,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:00:20,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20389 states. [2020-10-14 21:00:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20389 to 19791. [2020-10-14 21:00:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19791 states. [2020-10-14 21:00:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19791 states to 19791 states and 24283 transitions. [2020-10-14 21:00:21,119 INFO L78 Accepts]: Start accepts. Automaton has 19791 states and 24283 transitions. Word has length 444 [2020-10-14 21:00:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:21,119 INFO L479 AbstractCegarLoop]: Abstraction has 19791 states and 24283 transitions. [2020-10-14 21:00:21,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:00:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand 19791 states and 24283 transitions. [2020-10-14 21:00:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-14 21:00:21,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:21,139 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:00:21,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 21:00:21,139 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:21,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:21,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1045446009, now seen corresponding path program 1 times [2020-10-14 21:00:21,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:21,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105943964] [2020-10-14 21:00:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:21,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:23,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:23,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-10-14 21:00:23,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:00:23,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2388 [2020-10-14 21:00:23,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:23,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 21:00:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:00:23,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:23,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:23,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:23,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:23,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:23,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:23,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:00:23,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:23,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:23,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:23,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:23,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:23,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:23,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:23,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:23,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:23,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:00:23,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:23,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 21:00:23,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:23,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:00:23,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:00:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:23,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:23,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:00:23,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:23,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 21:00:23,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:23,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:00:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:00:24,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-14 21:00:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:24,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:24,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:00:24,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:24,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 21:00:24,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:24,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:24,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:24,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:00:24,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:24,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-14 21:00:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:24,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:24,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:24,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:00:24,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:24,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 21:00:24,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:24,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 21:00:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:24,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 279 proven. 144 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-10-14 21:00:24,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105943964] [2020-10-14 21:00:24,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:24,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:00:24,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557596831] [2020-10-14 21:00:24,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:00:24,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:24,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:00:24,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:00:24,405 INFO L87 Difference]: Start difference. First operand 19791 states and 24283 transitions. Second operand 7 states. [2020-10-14 21:00:28,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:28,091 INFO L93 Difference]: Finished difference Result 39405 states and 48408 transitions. [2020-10-14 21:00:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:00:28,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 454 [2020-10-14 21:00:28,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:28,128 INFO L225 Difference]: With dead ends: 39405 [2020-10-14 21:00:28,129 INFO L226 Difference]: Without dead ends: 20006 [2020-10-14 21:00:28,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:00:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20006 states. [2020-10-14 21:00:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20006 to 19983. [2020-10-14 21:00:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19983 states. [2020-10-14 21:00:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19983 states to 19983 states and 24461 transitions. [2020-10-14 21:00:28,482 INFO L78 Accepts]: Start accepts. Automaton has 19983 states and 24461 transitions. Word has length 454 [2020-10-14 21:00:28,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:28,482 INFO L479 AbstractCegarLoop]: Abstraction has 19983 states and 24461 transitions. [2020-10-14 21:00:28,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:00:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 19983 states and 24461 transitions. [2020-10-14 21:00:28,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-14 21:00:28,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:28,500 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 21:00:28,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 21:00:28,500 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:28,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:28,501 INFO L82 PathProgramCache]: Analyzing trace with hash -2098848894, now seen corresponding path program 1 times [2020-10-14 21:00:28,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:28,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732346818] [2020-10-14 21:00:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:28,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:28,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:30,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:30,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-14 21:00:30,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:00:30,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1969 [2020-10-14 21:00:30,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:30,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:30,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:30,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 21:00:30,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 21:00:30,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:30,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:30,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:30,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:30,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:00:30,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:30,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:30,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:30,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:30,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:30,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:30,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:30,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:00:30,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 21:00:30,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:30,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:30,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:30,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:00:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:30,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:30,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:30,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:00:30,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:30,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:00:30,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:30,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 21:00:30,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:30,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 21:00:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:30,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:30,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 21:00:30,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:30,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 21:00:30,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:30,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:00:30,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 396 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 21:00:31,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732346818] [2020-10-14 21:00:31,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:31,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:00:31,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788181289] [2020-10-14 21:00:31,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:00:31,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:31,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:00:31,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:00:31,257 INFO L87 Difference]: Start difference. First operand 19983 states and 24461 transitions. Second operand 7 states. [2020-10-14 21:00:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:34,261 INFO L93 Difference]: Finished difference Result 39198 states and 48376 transitions. [2020-10-14 21:00:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:00:34,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 457 [2020-10-14 21:00:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:34,304 INFO L225 Difference]: With dead ends: 39198 [2020-10-14 21:00:34,304 INFO L226 Difference]: Without dead ends: 22311 [2020-10-14 21:00:34,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:00:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22311 states. [2020-10-14 21:00:34,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22311 to 22095. [2020-10-14 21:00:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22095 states. [2020-10-14 21:00:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22095 states to 22095 states and 26651 transitions. [2020-10-14 21:00:34,784 INFO L78 Accepts]: Start accepts. Automaton has 22095 states and 26651 transitions. Word has length 457 [2020-10-14 21:00:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:34,785 INFO L479 AbstractCegarLoop]: Abstraction has 22095 states and 26651 transitions. [2020-10-14 21:00:34,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:00:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 22095 states and 26651 transitions. [2020-10-14 21:00:34,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-14 21:00:34,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:34,799 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, 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, 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, 1, 1, 1, 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 21:00:34,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 21:00:34,800 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:34,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:34,800 INFO L82 PathProgramCache]: Analyzing trace with hash 2014871363, now seen corresponding path program 1 times [2020-10-14 21:00:34,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:34,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081122057] [2020-10-14 21:00:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:35,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:36,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:36,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:36,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-14 21:00:36,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:00:36,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1461 [2020-10-14 21:00:36,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:36,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 21:00:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 21:00:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 21:00:36,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:36,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:36,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:36,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:36,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:36,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:36,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:00:36,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:36,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:36,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:36,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:36,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:00:36,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 21:00:36,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:36,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:36,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:00:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:36,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:36,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:00:36,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:36,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 21:00:36,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:36,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 21:00:36,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 21:00:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:36,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:36,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:00:36,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:36,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 21:00:36,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:36,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:00:36,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:36,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-14 21:00:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:36,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:36,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:00:36,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:36,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 21:00:36,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:36,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:00:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:00:36,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 501 proven. 16 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2020-10-14 21:00:37,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081122057] [2020-10-14 21:00:37,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:37,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:00:37,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59121235] [2020-10-14 21:00:37,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:00:37,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:37,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:00:37,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:00:37,226 INFO L87 Difference]: Start difference. First operand 22095 states and 26651 transitions. Second operand 8 states. [2020-10-14 21:00:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:41,456 INFO L93 Difference]: Finished difference Result 45541 states and 56319 transitions. [2020-10-14 21:00:41,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:00:41,457 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 462 [2020-10-14 21:00:41,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:41,518 INFO L225 Difference]: With dead ends: 45541 [2020-10-14 21:00:41,518 INFO L226 Difference]: Without dead ends: 26704 [2020-10-14 21:00:41,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:00:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26704 states. [2020-10-14 21:00:41,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26704 to 26309. [2020-10-14 21:00:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26309 states. [2020-10-14 21:00:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 32122 transitions. [2020-10-14 21:00:42,053 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 32122 transitions. Word has length 462 [2020-10-14 21:00:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:42,053 INFO L479 AbstractCegarLoop]: Abstraction has 26309 states and 32122 transitions. [2020-10-14 21:00:42,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:00:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 32122 transitions. [2020-10-14 21:00:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-14 21:00:42,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:42,069 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:00:42,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 21:00:42,070 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:42,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1267181573, now seen corresponding path program 1 times [2020-10-14 21:00:42,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:42,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239363805] [2020-10-14 21:00:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:42,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:42,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:44,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:44,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-14 21:00:44,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:00:44,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2205 [2020-10-14 21:00:44,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:44,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 21:00:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 21:00:44,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:44,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:44,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:44,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:44,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:44,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:44,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:00:44,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:44,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:44,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:44,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:44,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:44,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:00:44,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:44,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 21:00:44,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:44,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:44,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:00:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:44,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:44,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 21:00:44,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:44,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 21:00:44,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:44,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:00:44,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 21:00:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:44,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:44,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:00:44,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:44,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 21:00:44,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:44,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:44,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:44,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:00:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:44,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:00:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:45,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:45,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:45,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:00:45,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:45,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 21:00:45,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:45,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 21:00:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:45,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 377 proven. 85 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-14 21:00:45,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239363805] [2020-10-14 21:00:45,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:45,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:00:45,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878513316] [2020-10-14 21:00:45,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:00:45,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:45,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:00:45,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:00:45,147 INFO L87 Difference]: Start difference. First operand 26309 states and 32122 transitions. Second operand 7 states. [2020-10-14 21:00:48,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:48,932 INFO L93 Difference]: Finished difference Result 53990 states and 65826 transitions. [2020-10-14 21:00:48,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:00:48,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2020-10-14 21:00:48,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:48,994 INFO L225 Difference]: With dead ends: 53990 [2020-10-14 21:00:48,994 INFO L226 Difference]: Without dead ends: 28073 [2020-10-14 21:00:49,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:00:49,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28073 states. [2020-10-14 21:00:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28073 to 28033. [2020-10-14 21:00:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28033 states. [2020-10-14 21:00:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28033 states to 28033 states and 33966 transitions. [2020-10-14 21:00:49,489 INFO L78 Accepts]: Start accepts. Automaton has 28033 states and 33966 transitions. Word has length 464 [2020-10-14 21:00:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:49,490 INFO L479 AbstractCegarLoop]: Abstraction has 28033 states and 33966 transitions. [2020-10-14 21:00:49,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:00:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 28033 states and 33966 transitions. [2020-10-14 21:00:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-14 21:00:49,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:49,506 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:00:49,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 21:00:49,506 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:49,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:49,507 INFO L82 PathProgramCache]: Analyzing trace with hash 934459781, now seen corresponding path program 1 times [2020-10-14 21:00:49,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:49,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193903136] [2020-10-14 21:00:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:49,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:50,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:52,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:52,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-14 21:00:52,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:00:52,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3282 [2020-10-14 21:00:52,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:52,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 21:00:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 21:00:52,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:00:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:52,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:52,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:00:52,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:52,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:00:52,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:52,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:53,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:53,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:00:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:53,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:53,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:00:53,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:53,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 21:00:53,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:53,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:53,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:53,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:00:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:53,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:53,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:53,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:00:53,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 21:00:53,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:53,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:00:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:00:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 21:00:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:53,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 21:00:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:53,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:53,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:53,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:00:53,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 21:00:53,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:53,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:00:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:00:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:00:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:53,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:00:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:53,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:53,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:00:53,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:00:53,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:00:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 21:00:53,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:00:53,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:00:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:00:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 21:00:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:00:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:00:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 367 proven. 85 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-14 21:00:53,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193903136] [2020-10-14 21:00:53,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:00:53,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:00:53,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279759743] [2020-10-14 21:00:53,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:00:53,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:00:53,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:00:53,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:00:53,530 INFO L87 Difference]: Start difference. First operand 28033 states and 33966 transitions. Second operand 7 states. [2020-10-14 21:00:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:00:57,900 INFO L93 Difference]: Finished difference Result 54697 states and 66504 transitions. [2020-10-14 21:00:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:00:57,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2020-10-14 21:00:57,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:00:57,970 INFO L225 Difference]: With dead ends: 54697 [2020-10-14 21:00:57,971 INFO L226 Difference]: Without dead ends: 28590 [2020-10-14 21:00:57,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:00:58,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28590 states. [2020-10-14 21:00:58,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28590 to 26664. [2020-10-14 21:00:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26664 states. [2020-10-14 21:00:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26664 states to 26664 states and 31983 transitions. [2020-10-14 21:00:58,507 INFO L78 Accepts]: Start accepts. Automaton has 26664 states and 31983 transitions. Word has length 464 [2020-10-14 21:00:58,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:00:58,507 INFO L479 AbstractCegarLoop]: Abstraction has 26664 states and 31983 transitions. [2020-10-14 21:00:58,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:00:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 26664 states and 31983 transitions. [2020-10-14 21:00:58,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-14 21:00:58,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:00:58,520 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 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] [2020-10-14 21:00:58,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 21:00:58,521 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:00:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:00:58,521 INFO L82 PathProgramCache]: Analyzing trace with hash 807213670, now seen corresponding path program 1 times [2020-10-14 21:00:58,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:00:58,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788094007] [2020-10-14 21:00:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:00:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:00:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:59,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:59,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:00:59,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:02,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:02,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-14 21:01:02,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:01:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3699 [2020-10-14 21:01:02,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:02,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:01:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:01:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 492 [2020-10-14 21:01:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:02,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:02,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:02,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:02,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:02,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:01:02,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:02,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:01:02,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:02,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:02,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:02,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:02,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:01:02,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:02,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-14 21:01:02,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:02,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:01:02,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:02,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 21:01:02,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:02,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:01:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:03,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:03,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:03,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 21:01:03,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:03,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 21:01:03,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:03,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:03,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:01:03,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:03,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 21:01:03,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-14 21:01:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:03,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:03,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:03,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:01:03,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:01:03,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 21:01:03,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:03,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:03,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:03,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:03,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:01:03,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 14 proven. 378 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-14 21:01:03,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788094007] [2020-10-14 21:01:03,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:03,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 21:01:03,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855056965] [2020-10-14 21:01:03,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 21:01:03,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:03,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 21:01:03,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:01:03,987 INFO L87 Difference]: Start difference. First operand 26664 states and 31983 transitions. Second operand 12 states. [2020-10-14 21:01:11,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:11,187 INFO L93 Difference]: Finished difference Result 66347 states and 81629 transitions. [2020-10-14 21:01:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 21:01:11,188 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 484 [2020-10-14 21:01:11,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:11,283 INFO L225 Difference]: With dead ends: 66347 [2020-10-14 21:01:11,283 INFO L226 Difference]: Without dead ends: 43547 [2020-10-14 21:01:11,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 21:01:11,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43547 states. [2020-10-14 21:01:12,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43547 to 42024. [2020-10-14 21:01:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42024 states. [2020-10-14 21:01:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42024 states to 42024 states and 50818 transitions. [2020-10-14 21:01:12,099 INFO L78 Accepts]: Start accepts. Automaton has 42024 states and 50818 transitions. Word has length 484 [2020-10-14 21:01:12,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:12,099 INFO L479 AbstractCegarLoop]: Abstraction has 42024 states and 50818 transitions. [2020-10-14 21:01:12,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 21:01:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand 42024 states and 50818 transitions. [2020-10-14 21:01:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-14 21:01:12,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:12,120 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:12,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 21:01:12,120 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:12,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:12,121 INFO L82 PathProgramCache]: Analyzing trace with hash -601215178, now seen corresponding path program 1 times [2020-10-14 21:01:12,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:12,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191532963] [2020-10-14 21:01:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:12,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:12,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:13,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:13,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-14 21:01:13,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:01:13,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-10-14 21:01:13,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:13,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 21:01:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 21:01:13,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:13,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:13,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:13,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:13,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:01:13,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:13,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:13,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:13,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:13,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:13,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:01:13,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 21:01:13,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:13,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:13,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:13,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:01:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:13,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:13,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 21:01:13,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:13,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 21:01:13,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:13,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:01:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:13,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 21:01:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:13,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:14,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:14,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:01:14,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:14,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 21:01:14,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:14,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:14,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:01:14,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:14,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-14 21:01:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:14,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:14,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:01:14,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:14,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 21:01:14,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:14,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:14,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:14,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 21:01:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:14,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 379 proven. 85 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-14 21:01:14,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191532963] [2020-10-14 21:01:14,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:14,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:01:14,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995928811] [2020-10-14 21:01:14,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:14,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:14,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:14,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:14,535 INFO L87 Difference]: Start difference. First operand 42024 states and 50818 transitions. Second operand 7 states. [2020-10-14 21:01:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:19,491 INFO L93 Difference]: Finished difference Result 81564 states and 98908 transitions. [2020-10-14 21:01:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:01:19,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 491 [2020-10-14 21:01:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:19,577 INFO L225 Difference]: With dead ends: 81564 [2020-10-14 21:01:19,577 INFO L226 Difference]: Without dead ends: 43412 [2020-10-14 21:01:19,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 21:01:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43412 states. [2020-10-14 21:01:20,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43412 to 41830. [2020-10-14 21:01:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41830 states. [2020-10-14 21:01:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41830 states to 41830 states and 50441 transitions. [2020-10-14 21:01:20,153 INFO L78 Accepts]: Start accepts. Automaton has 41830 states and 50441 transitions. Word has length 491 [2020-10-14 21:01:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:20,153 INFO L479 AbstractCegarLoop]: Abstraction has 41830 states and 50441 transitions. [2020-10-14 21:01:20,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 41830 states and 50441 transitions. [2020-10-14 21:01:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-14 21:01:20,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:20,168 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:20,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 21:01:20,168 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:20,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:20,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1045400118, now seen corresponding path program 1 times [2020-10-14 21:01:20,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:20,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244171349] [2020-10-14 21:01:20,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:21,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:21,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-10-14 21:01:21,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:01:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1447 [2020-10-14 21:01:21,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:21,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 21:01:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:01:21,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:21,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:21,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:21,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:21,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:01:21,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:21,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:21,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:21,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:21,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:21,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:21,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:21,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:01:21,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:21,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 21:01:21,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:21,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:21,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:21,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:01:21,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:22,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:01:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:22,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:22,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:22,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:01:22,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 21:01:22,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:22,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:01:22,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:22,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-14 21:01:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:22,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:22,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:01:22,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 21:01:22,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:22,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:01:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:22,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-14 21:01:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:22,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:22,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:22,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:01:22,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 21:01:22,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:22,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 21:01:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:22,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 315 proven. 192 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 21:01:24,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244171349] [2020-10-14 21:01:24,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:24,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:01:24,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803465000] [2020-10-14 21:01:24,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:24,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:24,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:24,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:24,003 INFO L87 Difference]: Start difference. First operand 41830 states and 50441 transitions. Second operand 7 states. [2020-10-14 21:01:27,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:27,239 INFO L93 Difference]: Finished difference Result 80456 states and 97314 transitions. [2020-10-14 21:01:27,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:01:27,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 500 [2020-10-14 21:01:27,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:27,331 INFO L225 Difference]: With dead ends: 80456 [2020-10-14 21:01:27,331 INFO L226 Difference]: Without dead ends: 43056 [2020-10-14 21:01:27,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:01:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43056 states. [2020-10-14 21:01:27,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43056 to 42758. [2020-10-14 21:01:27,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42758 states. [2020-10-14 21:01:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42758 states to 42758 states and 51200 transitions. [2020-10-14 21:01:27,910 INFO L78 Accepts]: Start accepts. Automaton has 42758 states and 51200 transitions. Word has length 500 [2020-10-14 21:01:27,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:27,910 INFO L479 AbstractCegarLoop]: Abstraction has 42758 states and 51200 transitions. [2020-10-14 21:01:27,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:27,910 INFO L276 IsEmpty]: Start isEmpty. Operand 42758 states and 51200 transitions. [2020-10-14 21:01:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-14 21:01:27,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:27,927 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 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 21:01:27,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 21:01:27,927 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:27,928 INFO L82 PathProgramCache]: Analyzing trace with hash 703437200, now seen corresponding path program 1 times [2020-10-14 21:01:27,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:27,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659766877] [2020-10-14 21:01:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:28,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:28,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:28,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:29,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:29,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-14 21:01:29,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:01:29,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1959 [2020-10-14 21:01:29,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:29,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-14 21:01:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 21:01:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:30,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:30,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:30,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:30,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:30,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:01:30,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:30,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:30,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:30,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:30,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:30,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:30,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 21:01:30,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:30,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 21:01:30,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:30,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:30,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:30,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 21:01:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:30,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:30,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 21:01:30,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:30,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 21:01:30,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:30,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 21:01:30,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:30,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 21:01:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:30,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:30,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 21:01:30,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:30,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 21:01:30,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:30,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 21:01:30,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 453 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-14 21:01:30,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659766877] [2020-10-14 21:01:30,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:30,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:01:30,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76793093] [2020-10-14 21:01:30,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:30,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:30,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:30,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:30,699 INFO L87 Difference]: Start difference. First operand 42758 states and 51200 transitions. Second operand 7 states. [2020-10-14 21:01:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:34,564 INFO L93 Difference]: Finished difference Result 83848 states and 100106 transitions. [2020-10-14 21:01:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:01:34,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 535 [2020-10-14 21:01:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:34,640 INFO L225 Difference]: With dead ends: 83848 [2020-10-14 21:01:34,640 INFO L226 Difference]: Without dead ends: 41482 [2020-10-14 21:01:34,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:01:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41482 states. [2020-10-14 21:01:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41482 to 41020. [2020-10-14 21:01:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41020 states. [2020-10-14 21:01:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41020 states to 41020 states and 48057 transitions. [2020-10-14 21:01:35,214 INFO L78 Accepts]: Start accepts. Automaton has 41020 states and 48057 transitions. Word has length 535 [2020-10-14 21:01:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:35,215 INFO L479 AbstractCegarLoop]: Abstraction has 41020 states and 48057 transitions. [2020-10-14 21:01:35,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 41020 states and 48057 transitions. [2020-10-14 21:01:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-10-14 21:01:35,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:35,230 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:35,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 21:01:35,230 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:35,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:35,231 INFO L82 PathProgramCache]: Analyzing trace with hash 169291333, now seen corresponding path program 1 times [2020-10-14 21:01:35,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:35,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318301124] [2020-10-14 21:01:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:35,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:35,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:39,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:39,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 21:01:39,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:01:39,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4473 [2020-10-14 21:01:39,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:39,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:39,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:01:39,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:01:39,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-14 21:01:39,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:39,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:39,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:39,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:01:39,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:39,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:01:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:39,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:40,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:40,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 21:01:40,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:40,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 21:01:40,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:40,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 21:01:40,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:40,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 21:01:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:40,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:40,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:01:40,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 21:01:40,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:40,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:01:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:40,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-14 21:01:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:40,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:40,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:01:40,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:40,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 21:01:40,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:40,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:01:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:40,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:40,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-14 21:01:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:40,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:40,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:01:40,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:40,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 21:01:40,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:40,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 21:01:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 209 proven. 385 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-10-14 21:01:40,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318301124] [2020-10-14 21:01:40,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:40,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:01:40,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508842242] [2020-10-14 21:01:40,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:40,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:40,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:40,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:40,982 INFO L87 Difference]: Start difference. First operand 41020 states and 48057 transitions. Second operand 7 states. [2020-10-14 21:01:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:44,012 INFO L93 Difference]: Finished difference Result 76544 states and 90047 transitions. [2020-10-14 21:01:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:01:44,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 545 [2020-10-14 21:01:44,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:44,091 INFO L225 Difference]: With dead ends: 76544 [2020-10-14 21:01:44,091 INFO L226 Difference]: Without dead ends: 40716 [2020-10-14 21:01:44,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 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 21:01:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40716 states. [2020-10-14 21:01:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40716 to 40440. [2020-10-14 21:01:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40440 states. [2020-10-14 21:01:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40440 states to 40440 states and 47382 transitions. [2020-10-14 21:01:44,612 INFO L78 Accepts]: Start accepts. Automaton has 40440 states and 47382 transitions. Word has length 545 [2020-10-14 21:01:44,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:44,613 INFO L479 AbstractCegarLoop]: Abstraction has 40440 states and 47382 transitions. [2020-10-14 21:01:44,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:44,613 INFO L276 IsEmpty]: Start isEmpty. Operand 40440 states and 47382 transitions. [2020-10-14 21:01:44,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2020-10-14 21:01:44,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:44,628 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:44,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 21:01:44,628 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:44,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:44,629 INFO L82 PathProgramCache]: Analyzing trace with hash 254396914, now seen corresponding path program 1 times [2020-10-14 21:01:44,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:44,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939917980] [2020-10-14 21:01:44,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:45,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:47,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:47,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 570 [2020-10-14 21:01:47,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:01:47,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2454 [2020-10-14 21:01:47,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:47,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 21:01:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 21:01:47,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:47,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:47,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:47,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:47,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:47,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:47,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:01:47,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:47,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:47,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:47,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:01:47,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:47,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 21:01:47,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:47,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 21:01:47,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:47,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 21:01:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:47,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:47,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 21:01:47,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:47,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 21:01:47,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:47,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:01:47,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:47,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-14 21:01:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:47,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:47,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:01:47,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:47,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 21:01:47,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:47,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:01:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:47,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-14 21:01:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:47,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:47,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:47,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:01:47,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:47,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 21:01:47,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:47,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 21:01:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 348 proven. 203 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 21:01:48,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939917980] [2020-10-14 21:01:48,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:48,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:01:48,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555771427] [2020-10-14 21:01:48,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:48,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:48,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:48,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:48,070 INFO L87 Difference]: Start difference. First operand 40440 states and 47382 transitions. Second operand 7 states. [2020-10-14 21:01:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:51,386 INFO L93 Difference]: Finished difference Result 79980 states and 93700 transitions. [2020-10-14 21:01:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:01:51,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 554 [2020-10-14 21:01:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:51,460 INFO L225 Difference]: With dead ends: 79980 [2020-10-14 21:01:51,460 INFO L226 Difference]: Without dead ends: 41464 [2020-10-14 21:01:51,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:01:51,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41464 states. [2020-10-14 21:01:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41464 to 41390. [2020-10-14 21:01:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41390 states. [2020-10-14 21:01:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41390 states to 41390 states and 48274 transitions. [2020-10-14 21:01:51,998 INFO L78 Accepts]: Start accepts. Automaton has 41390 states and 48274 transitions. Word has length 554 [2020-10-14 21:01:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:51,998 INFO L479 AbstractCegarLoop]: Abstraction has 41390 states and 48274 transitions. [2020-10-14 21:01:51,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 41390 states and 48274 transitions. [2020-10-14 21:01:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-14 21:01:52,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:52,013 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:01:52,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 21:01:52,014 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:52,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:52,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1187040996, now seen corresponding path program 1 times [2020-10-14 21:01:52,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:52,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337724741] [2020-10-14 21:01:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:53,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:54,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:54,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 574 [2020-10-14 21:01:54,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:01:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2550 [2020-10-14 21:01:54,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:54,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:01:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 442 [2020-10-14 21:01:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 21:01:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:54,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:54,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:54,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:54,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:54,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:54,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:01:54,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:54,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:54,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:54,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:54,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:54,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 21:01:54,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:01:54,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:54,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:54,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 21:01:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:54,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:54,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:54,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 21:01:54,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 21:01:54,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:54,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:54,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 21:01:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:54,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:54,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 21:01:54,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 21:01:54,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:54,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 21:01:54,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:54,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-14 21:01:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:54,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:55,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:55,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:01:55,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:55,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 21:01:55,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:55,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:55,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:01:55,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:01:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 370 proven. 52 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-14 21:01:55,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337724741] [2020-10-14 21:01:55,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:55,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:01:55,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060776654] [2020-10-14 21:01:55,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:01:55,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:55,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:01:55,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:01:55,237 INFO L87 Difference]: Start difference. First operand 41390 states and 48274 transitions. Second operand 8 states. [2020-10-14 21:02:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:00,589 INFO L93 Difference]: Finished difference Result 90611 states and 105934 transitions. [2020-10-14 21:02:00,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:02:00,591 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 558 [2020-10-14 21:02:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:00,700 INFO L225 Difference]: With dead ends: 90611 [2020-10-14 21:02:00,700 INFO L226 Difference]: Without dead ends: 49413 [2020-10-14 21:02:00,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:02:00,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49413 states. [2020-10-14 21:02:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49413 to 41790. [2020-10-14 21:02:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41790 states. [2020-10-14 21:02:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41790 states to 41790 states and 48712 transitions. [2020-10-14 21:02:01,477 INFO L78 Accepts]: Start accepts. Automaton has 41790 states and 48712 transitions. Word has length 558 [2020-10-14 21:02:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:01,477 INFO L479 AbstractCegarLoop]: Abstraction has 41790 states and 48712 transitions. [2020-10-14 21:02:01,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:02:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 41790 states and 48712 transitions. [2020-10-14 21:02:01,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2020-10-14 21:02:01,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:01,493 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:02:01,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 21:02:01,493 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:01,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:01,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1231141082, now seen corresponding path program 1 times [2020-10-14 21:02:01,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:01,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233256301] [2020-10-14 21:02:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:03,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:06,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:06,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 585 [2020-10-14 21:02:06,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:02:06,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 21:02:06,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:06,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:02:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-14 21:02:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 21:02:06,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:06,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:06,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:06,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:06,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:02:06,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:06,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:06,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:06,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:06,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:06,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:06,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 21:02:06,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:06,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 21:02:06,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:06,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:06,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:06,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 21:02:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:06,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:06,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:06,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 21:02:06,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:06,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 21:02:06,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:06,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 21:02:06,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:06,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 21:02:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:07,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:07,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:02:07,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:07,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 21:02:07,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:07,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 21:02:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 21:02:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-14 21:02:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:07,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:07,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:07,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:02:07,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:07,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:02:07,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:07,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:07,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:07,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:07,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:02:07,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 427 proven. 4 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2020-10-14 21:02:07,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233256301] [2020-10-14 21:02:07,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:07,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:02:07,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564537921] [2020-10-14 21:02:07,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:02:07,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:07,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:02:07,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:02:07,571 INFO L87 Difference]: Start difference. First operand 41790 states and 48712 transitions. Second operand 10 states. [2020-10-14 21:02:15,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:15,831 INFO L93 Difference]: Finished difference Result 80785 states and 94515 transitions. [2020-10-14 21:02:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 21:02:15,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 569 [2020-10-14 21:02:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:15,918 INFO L225 Difference]: With dead ends: 80785 [2020-10-14 21:02:15,918 INFO L226 Difference]: Without dead ends: 43617 [2020-10-14 21:02:15,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2020-10-14 21:02:15,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43617 states. [2020-10-14 21:02:16,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43617 to 42188. [2020-10-14 21:02:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42188 states. [2020-10-14 21:02:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42188 states to 42188 states and 48634 transitions. [2020-10-14 21:02:16,498 INFO L78 Accepts]: Start accepts. Automaton has 42188 states and 48634 transitions. Word has length 569 [2020-10-14 21:02:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:16,499 INFO L479 AbstractCegarLoop]: Abstraction has 42188 states and 48634 transitions. [2020-10-14 21:02:16,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:02:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 42188 states and 48634 transitions. [2020-10-14 21:02:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2020-10-14 21:02:16,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:16,515 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:16,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 21:02:16,515 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:16,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:16,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1296966847, now seen corresponding path program 1 times [2020-10-14 21:02:16,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:16,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491482048] [2020-10-14 21:02:16,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:17,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:17,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 608 [2020-10-14 21:02:17,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1278 [2020-10-14 21:02:17,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:17,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 340 [2020-10-14 21:02:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 21:02:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:17,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:17,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:17,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:17,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:17,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:02:17,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:17,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:17,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:17,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:17,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:17,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:17,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:18,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:18,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 21:02:18,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 21:02:18,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:18,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:18,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 21:02:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:18,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:18,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 21:02:18,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:18,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 21:02:18,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:18,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 21:02:18,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-10-14 21:02:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:18,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:18,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:18,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:02:18,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:18,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 21:02:18,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:18,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:02:18,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:18,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-10-14 21:02:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:18,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:18,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:18,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:02:18,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:18,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 21:02:18,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:18,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 21:02:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:18,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 379 proven. 85 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-14 21:02:18,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491482048] [2020-10-14 21:02:18,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:18,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:02:18,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182776242] [2020-10-14 21:02:18,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:02:18,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:18,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:02:18,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:02:18,767 INFO L87 Difference]: Start difference. First operand 42188 states and 48634 transitions. Second operand 7 states.