/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=BIGGEST --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/Problem17_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:39:43,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:39:43,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:39:43,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:39:43,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:39:43,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:39:43,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:39:43,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:39:43,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:39:43,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:39:43,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:39:43,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:39:43,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:39:43,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:39:43,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:39:43,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:39:43,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:39:43,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:39:43,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:39:43,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:39:43,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:39:43,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:39:43,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:39:43,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:39:43,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:39:43,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:39:43,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:39:43,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:39:43,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:39:43,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:39:43,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:39:43,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:39:43,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:39:43,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:39:43,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:39:43,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:39:43,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:39:43,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:39:43,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:39:43,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:39:43,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:39:43,260 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 [2020-10-12 14:39:43,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:39:43,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:39:43,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:39:43,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:39:43,313 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:39:43,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:39:43,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:39:43,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:39:43,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:39:43,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:39:43,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:39:43,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:39:43,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:39:43,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:39:43,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:39:43,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:39:43,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:39:43,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:39:43,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:39:43,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:39:43,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:39:43,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:39:43,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:39:43,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:39:43,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:39:43,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:39:43,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:39:43,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:39:43,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:39:43,320 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:39:43,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:39:43,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:39:43,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:39:43,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:39:43,634 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:39:43,635 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label13.c [2020-10-12 14:39:43,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d544719e/95748deaff6a4e3294952895268f5e6f/FLAGf571c7a81 [2020-10-12 14:39:44,500 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:39:44,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label13.c [2020-10-12 14:39:44,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d544719e/95748deaff6a4e3294952895268f5e6f/FLAGf571c7a81 [2020-10-12 14:39:44,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d544719e/95748deaff6a4e3294952895268f5e6f [2020-10-12 14:39:44,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:39:44,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:39:44,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:39:44,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:39:44,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:39:44,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:39:44" (1/1) ... [2020-10-12 14:39:44,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f43d38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:44, skipping insertion in model container [2020-10-12 14:39:44,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:39:44" (1/1) ... [2020-10-12 14:39:44,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:39:44,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:39:45,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:39:45,971 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:39:46,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:39:46,469 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:39:46,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:46 WrapperNode [2020-10-12 14:39:46,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:39:46,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:39:46,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:39:46,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:39:46,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:46" (1/1) ... [2020-10-12 14:39:46,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:46" (1/1) ... [2020-10-12 14:39:46,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:46" (1/1) ... [2020-10-12 14:39:46,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:46" (1/1) ... [2020-10-12 14:39:46,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:46" (1/1) ... [2020-10-12 14:39:46,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:46" (1/1) ... [2020-10-12 14:39:46,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:46" (1/1) ... [2020-10-12 14:39:46,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:39:46,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:39:46,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:39:46,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:39:46,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:46" (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 [2020-10-12 14:39:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:39:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:39:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:39:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:39:46,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:39:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:39:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:39:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:39:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:39:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:39:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:39:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:39:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:39:55,729 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:39:55,729 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:39:55,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:39:55 BoogieIcfgContainer [2020-10-12 14:39:55,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:39:55,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:39:55,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:39:55,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:39:55,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:39:44" (1/3) ... [2020-10-12 14:39:55,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23784036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:39:55, skipping insertion in model container [2020-10-12 14:39:55,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:46" (2/3) ... [2020-10-12 14:39:55,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23784036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:39:55, skipping insertion in model container [2020-10-12 14:39:55,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:39:55" (3/3) ... [2020-10-12 14:39:55,760 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label13.c [2020-10-12 14:39:55,771 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:39:55,779 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:39:55,791 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:39:55,820 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:39:55,820 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:39:55,821 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:39:55,821 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:39:55,821 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:39:55,821 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:39:55,821 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:39:55,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:39:55,852 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-12 14:39:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 14:39:55,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:55,862 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] [2020-10-12 14:39:55,867 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:55,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:55,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1727544657, now seen corresponding path program 1 times [2020-10-12 14:39:55,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:55,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780704539] [2020-10-12 14:39:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:56,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:56,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 14:39:56,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-12 14:39:56,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:39:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:39:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 14:39:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:39:56,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:56,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:56,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:56,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:56,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:56,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:39:56,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:56,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:39:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:39:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:39:56,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780704539] [2020-10-12 14:39:56,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:39:56,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 14:39:56,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414303282] [2020-10-12 14:39:56,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:39:56,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:39:56,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:39:56,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:39:56,784 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2020-10-12 14:40:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:11,445 INFO L93 Difference]: Finished difference Result 2202 states and 4063 transitions. [2020-10-12 14:40:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:40:11,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-12 14:40:11,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:11,488 INFO L225 Difference]: With dead ends: 2202 [2020-10-12 14:40:11,488 INFO L226 Difference]: Without dead ends: 1501 [2020-10-12 14:40:11,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:40:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2020-10-12 14:40:11,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1466. [2020-10-12 14:40:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1466 states. [2020-10-12 14:40:11,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2357 transitions. [2020-10-12 14:40:11,676 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2357 transitions. Word has length 36 [2020-10-12 14:40:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:11,677 INFO L479 AbstractCegarLoop]: Abstraction has 1466 states and 2357 transitions. [2020-10-12 14:40:11,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:40:11,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2357 transitions. [2020-10-12 14:40:11,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 14:40:11,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:11,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:40:11,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:40:11,695 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:11,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:11,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1397600561, now seen corresponding path program 1 times [2020-10-12 14:40:11,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:11,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475815251] [2020-10-12 14:40:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:11,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:12,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:13,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:13,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 14:40:13,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:40:13,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1386 [2020-10-12 14:40:13,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:40:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:40:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:40:13,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:40:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:13,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:13,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:13,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:13,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 14:40:13,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:40:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 14:40:13,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:13,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:13,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:13,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 14:40:13,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:13,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-12 14:40:13,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:40:13,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 14:40:13,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:40:13,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475815251] [2020-10-12 14:40:13,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:40:13,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:40:13,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068418751] [2020-10-12 14:40:13,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:40:13,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:13,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:40:13,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:40:13,641 INFO L87 Difference]: Start difference. First operand 1466 states and 2357 transitions. Second operand 7 states. [2020-10-12 14:40:27,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:27,318 INFO L93 Difference]: Finished difference Result 3832 states and 6302 transitions. [2020-10-12 14:40:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:40:27,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-12 14:40:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:27,336 INFO L225 Difference]: With dead ends: 3832 [2020-10-12 14:40:27,337 INFO L226 Difference]: Without dead ends: 2372 [2020-10-12 14:40:27,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:40:27,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2020-10-12 14:40:27,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 1917. [2020-10-12 14:40:27,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-10-12 14:40:27,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2644 transitions. [2020-10-12 14:40:27,415 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2644 transitions. Word has length 118 [2020-10-12 14:40:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:27,416 INFO L479 AbstractCegarLoop]: Abstraction has 1917 states and 2644 transitions. [2020-10-12 14:40:27,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:40:27,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2644 transitions. [2020-10-12 14:40:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-12 14:40:27,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:27,490 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:40:27,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:40:27,491 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:27,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:27,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1869909675, now seen corresponding path program 1 times [2020-10-12 14:40:27,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:27,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691026733] [2020-10-12 14:40:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:27,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:28,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:29,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:29,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:29,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-12 14:40:29,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:40:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1594 [2020-10-12 14:40:29,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:40:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:40:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:40:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:29,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:29,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:29,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:29,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:29,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 14:40:29,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:29,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:29,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:29,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:29,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:29,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:40:29,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 14:40:29,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:29,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:29,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:29,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:40:29,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:40:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:29,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:29,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:40:29,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:29,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 14:40:29,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:40:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:40:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 93 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:40:29,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691026733] [2020-10-12 14:40:29,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:40:29,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:40:29,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118632202] [2020-10-12 14:40:29,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:40:29,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:29,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:40:29,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:40:29,977 INFO L87 Difference]: Start difference. First operand 1917 states and 2644 transitions. Second operand 6 states. [2020-10-12 14:40:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:44,641 INFO L93 Difference]: Finished difference Result 5711 states and 7969 transitions. [2020-10-12 14:40:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:40:44,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2020-10-12 14:40:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:44,669 INFO L225 Difference]: With dead ends: 5711 [2020-10-12 14:40:44,670 INFO L226 Difference]: Without dead ends: 2892 [2020-10-12 14:40:44,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:40:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-10-12 14:40:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2854. [2020-10-12 14:40:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2854 states. [2020-10-12 14:40:44,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2854 states to 2854 states and 3688 transitions. [2020-10-12 14:40:44,752 INFO L78 Accepts]: Start accepts. Automaton has 2854 states and 3688 transitions. Word has length 192 [2020-10-12 14:40:44,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:44,753 INFO L479 AbstractCegarLoop]: Abstraction has 2854 states and 3688 transitions. [2020-10-12 14:40:44,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:40:44,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2854 states and 3688 transitions. [2020-10-12 14:40:44,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-12 14:40:44,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:44,758 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:40:44,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:40:44,759 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:44,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:44,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1444736539, now seen corresponding path program 1 times [2020-10-12 14:40:44,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:44,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520982230] [2020-10-12 14:40:44,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:44,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:46,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:46,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-12 14:40:46,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:40:46,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-10-12 14:40:46,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:40:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 14:40:46,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:46,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:46,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:46,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:46,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:40:46,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:46,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:46,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:40:46,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:46,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 14:40:46,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:46,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:46,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:46,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:40:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:40:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:46,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:46,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:46,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 14:40:46,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 14:40:46,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:40:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:40:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:40:46,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520982230] [2020-10-12 14:40:46,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:40:46,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:40:46,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319234228] [2020-10-12 14:40:46,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:40:46,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:46,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:40:46,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:40:46,631 INFO L87 Difference]: Start difference. First operand 2854 states and 3688 transitions. Second operand 8 states. [2020-10-12 14:40:46,774 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-12 14:40:59,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:59,732 INFO L93 Difference]: Finished difference Result 7562 states and 10169 transitions. [2020-10-12 14:40:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:40:59,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 193 [2020-10-12 14:40:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:59,773 INFO L225 Difference]: With dead ends: 7562 [2020-10-12 14:40:59,773 INFO L226 Difference]: Without dead ends: 4714 [2020-10-12 14:40:59,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:40:59,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4714 states. [2020-10-12 14:40:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4714 to 4692. [2020-10-12 14:40:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2020-10-12 14:40:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6045 transitions. [2020-10-12 14:40:59,961 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6045 transitions. Word has length 193 [2020-10-12 14:40:59,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:59,962 INFO L479 AbstractCegarLoop]: Abstraction has 4692 states and 6045 transitions. [2020-10-12 14:40:59,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:40:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6045 transitions. [2020-10-12 14:40:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-12 14:40:59,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:59,967 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:40:59,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:40:59,968 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:59,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1545841929, now seen corresponding path program 1 times [2020-10-12 14:40:59,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:59,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235732050] [2020-10-12 14:40:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:41:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:00,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:00,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:02,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:04,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:04,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-12 14:41:04,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:41:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4288 [2020-10-12 14:41:04,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:41:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:41:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-12 14:41:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:41:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:04,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:04,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:04,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:41:04,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:04,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:41:04,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:41:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:41:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:04,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:41:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:04,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:04,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:04,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:41:04,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:04,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-12 14:41:04,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:41:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:41:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:41:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:05,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:05,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:05,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:41:05,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:05,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 14:41:05,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:05,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:41:05,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:41:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 127 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:41:05,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235732050] [2020-10-12 14:41:05,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:41:05,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:41:05,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032648717] [2020-10-12 14:41:05,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:41:05,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:05,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:41:05,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:41:05,349 INFO L87 Difference]: Start difference. First operand 4692 states and 6045 transitions. Second operand 10 states. [2020-10-12 14:41:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:41:26,813 INFO L93 Difference]: Finished difference Result 14137 states and 18641 transitions. [2020-10-12 14:41:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 14:41:26,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2020-10-12 14:41:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:41:26,866 INFO L225 Difference]: With dead ends: 14137 [2020-10-12 14:41:26,866 INFO L226 Difference]: Without dead ends: 8990 [2020-10-12 14:41:26,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-12 14:41:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8990 states. [2020-10-12 14:41:27,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8990 to 8866. [2020-10-12 14:41:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8866 states. [2020-10-12 14:41:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8866 states to 8866 states and 10773 transitions. [2020-10-12 14:41:27,255 INFO L78 Accepts]: Start accepts. Automaton has 8866 states and 10773 transitions. Word has length 198 [2020-10-12 14:41:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:41:27,256 INFO L479 AbstractCegarLoop]: Abstraction has 8866 states and 10773 transitions. [2020-10-12 14:41:27,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:41:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 8866 states and 10773 transitions. [2020-10-12 14:41:27,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-12 14:41:27,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:41:27,263 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:41:27,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:41:27,264 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:41:27,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:41:27,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2118355084, now seen corresponding path program 1 times [2020-10-12 14:41:27,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:41:27,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696238342] [2020-10-12 14:41:27,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:41:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:27,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:27,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:32,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:32,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-12 14:41:32,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:41:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 14:41:32,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 14:41:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-12 14:41:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 14:41:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:32,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:41:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:32,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:32,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:32,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:41:32,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:32,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:41:32,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:32,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:32,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:32,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:41:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:32,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:32,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:32,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:41:32,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 14:41:32,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:32,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:32,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:41:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:32,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:32,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:33,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:33,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:41:33,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:41:33,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-10-12 14:41:33,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 14:41:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 14:41:33,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:34,270 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-12 14:41:34,676 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-12 14:41:35,112 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-12 14:41:35,503 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-12 14:41:35,873 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-12 14:41:36,197 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-12 14:41:36,594 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-12 14:41:36,871 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-12 14:41:37,115 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-12 14:41:37,347 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-12 14:41:37,545 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-12 14:41:37,731 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-12 14:41:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 14:41:38,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696238342] [2020-10-12 14:41:38,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:41:38,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 14:41:38,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295192759] [2020-10-12 14:41:38,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 14:41:38,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:38,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 14:41:38,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2020-10-12 14:41:38,076 INFO L87 Difference]: Start difference. First operand 8866 states and 10773 transitions. Second operand 20 states. [2020-10-12 14:41:38,607 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-12 14:41:39,271 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-12 14:41:39,430 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-12 14:41:39,624 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-12 14:41:39,872 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-12 14:41:40,029 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-12 14:41:40,191 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-12 14:41:40,369 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-12 14:41:58,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:41:58,432 INFO L93 Difference]: Finished difference Result 9950 states and 12492 transitions. [2020-10-12 14:41:58,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 14:41:58,441 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 209 [2020-10-12 14:41:58,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:41:58,491 INFO L225 Difference]: With dead ends: 9950 [2020-10-12 14:41:58,491 INFO L226 Difference]: Without dead ends: 9484 [2020-10-12 14:41:58,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 14:41:58,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9484 states. [2020-10-12 14:41:58,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9484 to 8609. [2020-10-12 14:41:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8609 states. [2020-10-12 14:41:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8609 states to 8609 states and 10662 transitions. [2020-10-12 14:41:58,791 INFO L78 Accepts]: Start accepts. Automaton has 8609 states and 10662 transitions. Word has length 209 [2020-10-12 14:41:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:41:58,792 INFO L479 AbstractCegarLoop]: Abstraction has 8609 states and 10662 transitions. [2020-10-12 14:41:58,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 14:41:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 8609 states and 10662 transitions. [2020-10-12 14:41:58,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-12 14:41:58,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:41:58,803 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:41:58,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:41:58,804 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:41:58,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:41:58,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1579557611, now seen corresponding path program 1 times [2020-10-12 14:41:58,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:41:58,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463255023] [2020-10-12 14:41:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:41:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:58,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:59,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:00,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:03,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:03,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 14:42:03,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:42:03,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-12 14:42:03,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:42:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-12 14:42:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 14:42:03,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:04,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:42:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:04,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:04,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:04,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:42:04,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:04,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:42:04,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:42:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:42:04,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:42:04,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:42:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:04,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:04,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:42:04,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 14:42:04,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:42:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:42:04,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:42:04,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:42:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:04,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:04,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:42:04,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:04,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 14:42:04,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:42:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:42:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:04,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:42:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:04,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:04,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:42:04,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:42:04,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 14:42:04,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:42:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:42:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:42:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 227 proven. 5 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 14:42:05,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463255023] [2020-10-12 14:42:05,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:42:05,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:42:05,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074424895] [2020-10-12 14:42:05,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:42:05,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:42:05,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:42:05,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:42:05,064 INFO L87 Difference]: Start difference. First operand 8609 states and 10662 transitions. Second operand 7 states. [2020-10-12 14:42:16,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:42:16,751 INFO L93 Difference]: Finished difference Result 18132 states and 23128 transitions. [2020-10-12 14:42:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:42:16,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-12 14:42:16,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:42:16,805 INFO L225 Difference]: With dead ends: 18132 [2020-10-12 14:42:16,805 INFO L226 Difference]: Without dead ends: 9964 [2020-10-12 14:42:16,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:42:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9964 states. [2020-10-12 14:42:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9964 to 9914. [2020-10-12 14:42:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9914 states. [2020-10-12 14:42:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9914 states to 9914 states and 12483 transitions. [2020-10-12 14:42:17,043 INFO L78 Accepts]: Start accepts. Automaton has 9914 states and 12483 transitions. Word has length 306 [2020-10-12 14:42:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:42:17,044 INFO L479 AbstractCegarLoop]: Abstraction has 9914 states and 12483 transitions. [2020-10-12 14:42:17,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:42:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 9914 states and 12483 transitions. [2020-10-12 14:42:17,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-12 14:42:17,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:42:17,052 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:42:17,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:42:17,052 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:42:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:42:17,053 INFO L82 PathProgramCache]: Analyzing trace with hash -33102895, now seen corresponding path program 1 times [2020-10-12 14:42:17,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:42:17,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524790352] [2020-10-12 14:42:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:42:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:18,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:20,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:20,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-12 14:42:20,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:42:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3336 [2020-10-12 14:42:20,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:42:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 286 [2020-10-12 14:42:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 14:42:20,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:20,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:42:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:20,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:20,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:42:20,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:42:20,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:42:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:42:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:20,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:42:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:20,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:20,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:42:20,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 14:42:20,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:42:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:42:20,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:20,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:42:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:20,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:20,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:42:20,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 14:42:20,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:42:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:42:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:20,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:42:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:20,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:20,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:20,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:42:20,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:20,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 14:42:20,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:42:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:42:20,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 90 proven. 3 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-10-12 14:42:21,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524790352] [2020-10-12 14:42:21,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:42:21,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:42:21,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769294118] [2020-10-12 14:42:21,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:42:21,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:42:21,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:42:21,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:42:21,026 INFO L87 Difference]: Start difference. First operand 9914 states and 12483 transitions. Second operand 5 states. [2020-10-12 14:42:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:42:42,266 INFO L93 Difference]: Finished difference Result 25359 states and 32718 transitions. [2020-10-12 14:42:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:42:42,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-12 14:42:42,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:42:42,326 INFO L225 Difference]: With dead ends: 25359 [2020-10-12 14:42:42,326 INFO L226 Difference]: Without dead ends: 14899 [2020-10-12 14:42:42,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:42:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14899 states. [2020-10-12 14:42:42,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14899 to 14805. [2020-10-12 14:42:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14805 states. [2020-10-12 14:42:42,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 18697 transitions. [2020-10-12 14:42:42,815 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 18697 transitions. Word has length 308 [2020-10-12 14:42:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:42:42,816 INFO L479 AbstractCegarLoop]: Abstraction has 14805 states and 18697 transitions. [2020-10-12 14:42:42,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:42:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 18697 transitions. [2020-10-12 14:42:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 14:42:42,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:42:42,829 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:42:42,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:42:42,830 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:42:42,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:42:42,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1362622386, now seen corresponding path program 1 times [2020-10-12 14:42:42,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:42:42,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537326417] [2020-10-12 14:42:42,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:42:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:43,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:43,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:44,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:44,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-12 14:42:44,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:42:44,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1912 [2020-10-12 14:42:44,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:42:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-12 14:42:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:42:44,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:44,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:42:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:44,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:44,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:44,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:42:44,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:42:44,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:42:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:42:44,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:45,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:42:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:45,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:45,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:42:45,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:45,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:42:45,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:42:45,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:45,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:42:45,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:45,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:42:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:45,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:45,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:42:45,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:45,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:42:45,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:42:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:42:45,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:45,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:42:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:45,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:45,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:45,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 14:42:45,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-12 14:42:45,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:42:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:42:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:42:45,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 259 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-12 14:42:45,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537326417] [2020-10-12 14:42:45,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:42:45,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:42:45,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763211470] [2020-10-12 14:42:45,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:42:45,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:42:45,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:42:45,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:42:45,511 INFO L87 Difference]: Start difference. First operand 14805 states and 18697 transitions. Second operand 7 states. [2020-10-12 14:43:05,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:43:05,507 INFO L93 Difference]: Finished difference Result 33513 states and 43368 transitions. [2020-10-12 14:43:05,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:43:05,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-12 14:43:05,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:43:05,575 INFO L225 Difference]: With dead ends: 33513 [2020-10-12 14:43:05,576 INFO L226 Difference]: Without dead ends: 19149 [2020-10-12 14:43:05,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:43:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19149 states. [2020-10-12 14:43:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19149 to 18541. [2020-10-12 14:43:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18541 states. [2020-10-12 14:43:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18541 states to 18541 states and 23430 transitions. [2020-10-12 14:43:05,996 INFO L78 Accepts]: Start accepts. Automaton has 18541 states and 23430 transitions. Word has length 312 [2020-10-12 14:43:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:43:05,996 INFO L479 AbstractCegarLoop]: Abstraction has 18541 states and 23430 transitions. [2020-10-12 14:43:05,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:43:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 18541 states and 23430 transitions. [2020-10-12 14:43:06,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-12 14:43:06,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:43:06,005 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:43:06,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:43:06,006 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:43:06,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:43:06,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1771221303, now seen corresponding path program 1 times [2020-10-12 14:43:06,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:43:06,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537814669] [2020-10-12 14:43:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:43:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:06,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:08,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:08,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-12 14:43:08,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:43:08,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2878 [2020-10-12 14:43:08,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:08,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:43:08,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-12 14:43:08,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 14:43:08,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:09,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:43:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:09,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:09,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:43:09,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:43:09,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:43:09,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:43:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:43:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:43:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:09,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:43:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:09,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:09,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:09,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:43:09,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:43:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:43:09,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:43:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:43:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:43:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:09,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:43:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:09,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:09,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:09,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:43:09,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:43:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:43:09,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:43:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:43:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:43:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:43:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:09,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:09,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:09,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 14:43:09,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:43:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 14:43:09,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:43:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:43:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 14:43:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 90 proven. 3 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-10-12 14:43:09,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537814669] [2020-10-12 14:43:09,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:43:09,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:43:09,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833701384] [2020-10-12 14:43:09,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:43:09,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:43:09,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:43:09,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:43:09,295 INFO L87 Difference]: Start difference. First operand 18541 states and 23430 transitions. Second operand 5 states. [2020-10-12 14:43:25,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:43:25,041 INFO L93 Difference]: Finished difference Result 42438 states and 55051 transitions. [2020-10-12 14:43:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:43:25,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-12 14:43:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:43:25,127 INFO L225 Difference]: With dead ends: 42438 [2020-10-12 14:43:25,127 INFO L226 Difference]: Without dead ends: 23340 [2020-10-12 14:43:25,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:43:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23340 states. [2020-10-12 14:43:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23340 to 23310. [2020-10-12 14:43:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23310 states. [2020-10-12 14:43:25,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23310 states to 23310 states and 28733 transitions. [2020-10-12 14:43:25,606 INFO L78 Accepts]: Start accepts. Automaton has 23310 states and 28733 transitions. Word has length 330 [2020-10-12 14:43:25,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:43:25,607 INFO L479 AbstractCegarLoop]: Abstraction has 23310 states and 28733 transitions. [2020-10-12 14:43:25,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:43:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 23310 states and 28733 transitions. [2020-10-12 14:43:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-12 14:43:25,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:43:25,626 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:43:25,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:43:25,626 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:43:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:43:25,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1304833798, now seen corresponding path program 1 times [2020-10-12 14:43:25,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:43:25,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080208102] [2020-10-12 14:43:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:43:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:25,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:25,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:26,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:27,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:30,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:30,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-12 14:43:30,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:43:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4272 [2020-10-12 14:43:30,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:43:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 279 [2020-10-12 14:43:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 14:43:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:30,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:43:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:30,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:30,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:43:30,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:43:30,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:43:30,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:43:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:43:30,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:43:30,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:30,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:43:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:30,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:30,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:30,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:43:30,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:43:30,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:43:30,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:43:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:43:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:43:30,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:30,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:43:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:30,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:30,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:30,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 14:43:30,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:43:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 14:43:30,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:43:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:43:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-12 14:43:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:30,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-12 14:43:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:30,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:30,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:30,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:30,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 14:43:30,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:43:30,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-12 14:43:30,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:43:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:43:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:43:30,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 244 proven. 30 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 14:43:30,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080208102] [2020-10-12 14:43:30,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:43:30,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:43:30,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858168781] [2020-10-12 14:43:30,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:43:30,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:43:30,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:43:30,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:43:30,890 INFO L87 Difference]: Start difference. First operand 23310 states and 28733 transitions. Second operand 6 states.