/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:53:43,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:53:43,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:53:43,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:53:43,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:53:43,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:53:43,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:53:43,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:53:43,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:53:43,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:53:43,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:53:43,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:53:43,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:53:43,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:53:43,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:53:43,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:53:43,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:53:43,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:53:43,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:53:43,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:53:43,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:53:43,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:53:43,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:53:43,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:53:43,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:53:43,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:53:43,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:53:43,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:53:43,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:53:43,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:53:43,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:53:43,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:53:43,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:53:43,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:53:43,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:53:43,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:53:43,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:53:43,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:53:43,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:53:43,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:53:43,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:53:43,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 02:53:43,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:53:43,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:53:43,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:53:43,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:53:43,370 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:53:43,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:53:43,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:53:43,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:53:43,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:53:43,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:53:43,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:53:43,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:53:43,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:53:43,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:53:43,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:53:43,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:53:43,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:53:43,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:53:43,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:53:43,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:53:43,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:53:43,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:53:43,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:53:43,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:53:43,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:53:43,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:53:43,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:53:43,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:53:43,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:53:43,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:53:43,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:53:43,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:53:43,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:53:43,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:53:43,755 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:53:43,756 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2020-10-14 02:53:43,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/249b31008/d5b655e40c8e496482c325ea9baefe29/FLAG860a5aa41 [2020-10-14 02:53:44,682 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:53:44,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2020-10-14 02:53:44,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/249b31008/d5b655e40c8e496482c325ea9baefe29/FLAG860a5aa41 [2020-10-14 02:53:45,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/249b31008/d5b655e40c8e496482c325ea9baefe29 [2020-10-14 02:53:45,209 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:53:45,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:53:45,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:53:45,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:53:45,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:53:45,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:53:45" (1/1) ... [2020-10-14 02:53:45,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2234316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:45, skipping insertion in model container [2020-10-14 02:53:45,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:53:45" (1/1) ... [2020-10-14 02:53:45,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:53:45,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:53:47,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:53:47,120 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:53:47,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:53:47,911 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:53:47,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:47 WrapperNode [2020-10-14 02:53:47,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:53:47,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:53:47,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:53:47,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:53:47,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:47" (1/1) ... [2020-10-14 02:53:47,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:47" (1/1) ... [2020-10-14 02:53:47,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:47" (1/1) ... [2020-10-14 02:53:47,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:47" (1/1) ... [2020-10-14 02:53:48,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:47" (1/1) ... [2020-10-14 02:53:48,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:47" (1/1) ... [2020-10-14 02:53:48,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:47" (1/1) ... [2020-10-14 02:53:48,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:53:48,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:53:48,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:53:48,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:53:48,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:53:48,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:53:48,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:53:48,315 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:53:48,315 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:53:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:53:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:53:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:53:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:53:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:53:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:53:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:53:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:53:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:53:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:53:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:53:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:53:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:53:54,146 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:53:54,147 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:53:54,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:53:54 BoogieIcfgContainer [2020-10-14 02:53:54,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:53:54,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:53:54,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:53:54,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:53:54,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:53:45" (1/3) ... [2020-10-14 02:53:54,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48bcc56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:53:54, skipping insertion in model container [2020-10-14 02:53:54,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:47" (2/3) ... [2020-10-14 02:53:54,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48bcc56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:53:54, skipping insertion in model container [2020-10-14 02:53:54,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:53:54" (3/3) ... [2020-10-14 02:53:54,181 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label49.c [2020-10-14 02:53:54,193 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:53:54,209 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:53:54,227 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:53:54,268 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:53:54,268 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:53:54,269 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:53:54,269 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:53:54,269 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:53:54,269 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:53:54,269 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:53:54,270 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:53:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:53:54,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 02:53:54,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:54,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:53:54,336 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:54,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:54,345 INFO L82 PathProgramCache]: Analyzing trace with hash 838851165, now seen corresponding path program 1 times [2020-10-14 02:53:54,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:54,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462581982] [2020-10-14 02:53:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:55,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:55,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 02:53:55,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:55,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-14 02:53:55,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:55,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:55,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:53:55,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:53:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 02:53:55,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:53:55,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:55,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:55,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:55,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:55,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:55,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 02:53:55,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:55,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:55,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:55,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:53:55,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:55,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:55,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462581982] [2020-10-14 02:53:55,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:53:55,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:53:55,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765609467] [2020-10-14 02:53:55,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:53:55,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:55,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:53:55,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:53:55,311 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:54:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:03,848 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:54:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:54:03,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-14 02:54:03,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:03,884 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:54:03,884 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:54:03,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:54:03,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:54:04,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:54:04,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:54:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-14 02:54:04,063 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 48 [2020-10-14 02:54:04,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:04,064 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-14 02:54:04,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:54:04,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-14 02:54:04,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 02:54:04,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:04,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:54:04,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:54:04,071 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:04,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:04,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1433681425, now seen corresponding path program 1 times [2020-10-14 02:54:04,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:04,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452597054] [2020-10-14 02:54:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:04,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:05,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:05,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:54:05,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:54:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-10-14 02:54:05,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:05,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 02:54:05,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 02:54:05,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:05,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:05,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:05,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:05,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 02:54:05,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:05,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:05,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:05,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:05,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:54:05,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:05,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:05,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 02:54:05,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:05,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 02:54:05,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:05,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 02:54:05,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:54:05,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452597054] [2020-10-14 02:54:05,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:05,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:54:05,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944618298] [2020-10-14 02:54:05,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:54:05,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:05,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:54:05,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:54:05,962 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 5 states. [2020-10-14 02:54:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:20,517 INFO L93 Difference]: Finished difference Result 4675 states and 8270 transitions. [2020-10-14 02:54:20,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:54:20,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-14 02:54:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:20,541 INFO L225 Difference]: With dead ends: 4675 [2020-10-14 02:54:20,541 INFO L226 Difference]: Without dead ends: 3128 [2020-10-14 02:54:20,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:54:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-14 02:54:20,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3111. [2020-10-14 02:54:20,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3111 states. [2020-10-14 02:54:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4907 transitions. [2020-10-14 02:54:20,650 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4907 transitions. Word has length 117 [2020-10-14 02:54:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:20,651 INFO L479 AbstractCegarLoop]: Abstraction has 3111 states and 4907 transitions. [2020-10-14 02:54:20,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:54:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4907 transitions. [2020-10-14 02:54:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 02:54:20,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:20,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:54:20,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:54:20,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:20,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1777000628, now seen corresponding path program 1 times [2020-10-14 02:54:20,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:20,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688362846] [2020-10-14 02:54:20,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:20,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:20,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:21,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:21,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:21,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:21,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 02:54:21,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:54:21,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 973 [2020-10-14 02:54:21,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:21,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:21,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:21,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 02:54:21,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 02:54:21,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:21,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:21,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:21,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:21,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:21,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:21,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:54:21,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:21,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:21,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:21,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:21,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:21,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 02:54:21,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:21,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 02:54:21,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:21,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 02:54:21,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:54:21,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688362846] [2020-10-14 02:54:21,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:21,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:54:21,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722843953] [2020-10-14 02:54:21,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:54:21,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:21,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:54:21,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:54:21,913 INFO L87 Difference]: Start difference. First operand 3111 states and 4907 transitions. Second operand 5 states. [2020-10-14 02:54:34,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:34,633 INFO L93 Difference]: Finished difference Result 9343 states and 14942 transitions. [2020-10-14 02:54:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:54:34,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-14 02:54:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:34,668 INFO L225 Difference]: With dead ends: 9343 [2020-10-14 02:54:34,669 INFO L226 Difference]: Without dead ends: 6238 [2020-10-14 02:54:34,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:54:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-10-14 02:54:34,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6209. [2020-10-14 02:54:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-10-14 02:54:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 8467 transitions. [2020-10-14 02:54:34,856 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 8467 transitions. Word has length 118 [2020-10-14 02:54:34,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:34,862 INFO L479 AbstractCegarLoop]: Abstraction has 6209 states and 8467 transitions. [2020-10-14 02:54:34,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:54:34,863 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 8467 transitions. [2020-10-14 02:54:34,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 02:54:34,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:34,875 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:54:34,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:54:34,876 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:34,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:34,876 INFO L82 PathProgramCache]: Analyzing trace with hash -903427859, now seen corresponding path program 1 times [2020-10-14 02:54:34,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:34,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995003053] [2020-10-14 02:54:34,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:35,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:35,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 02:54:35,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:54:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-14 02:54:35,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:35,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 02:54:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 02:54:35,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:35,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:35,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:35,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:35,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:35,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:35,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:54:35,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:35,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:35,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:35,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:35,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:35,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:35,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:54:35,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 02:54:35,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:35,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 02:54:35,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:54:35,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995003053] [2020-10-14 02:54:35,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:35,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:54:35,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744577180] [2020-10-14 02:54:35,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:54:35,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:35,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:54:35,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:54:35,822 INFO L87 Difference]: Start difference. First operand 6209 states and 8467 transitions. Second operand 5 states. [2020-10-14 02:54:52,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:52,089 INFO L93 Difference]: Finished difference Result 15559 states and 21677 transitions. [2020-10-14 02:54:52,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:54:52,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-14 02:54:52,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:52,138 INFO L225 Difference]: With dead ends: 15559 [2020-10-14 02:54:52,138 INFO L226 Difference]: Without dead ends: 9356 [2020-10-14 02:54:52,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:54:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9356 states. [2020-10-14 02:54:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9356 to 8571. [2020-10-14 02:54:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8571 states. [2020-10-14 02:54:52,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8571 states to 8571 states and 11821 transitions. [2020-10-14 02:54:52,495 INFO L78 Accepts]: Start accepts. Automaton has 8571 states and 11821 transitions. Word has length 119 [2020-10-14 02:54:52,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:52,496 INFO L479 AbstractCegarLoop]: Abstraction has 8571 states and 11821 transitions. [2020-10-14 02:54:52,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:54:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 8571 states and 11821 transitions. [2020-10-14 02:54:52,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 02:54:52,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:52,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:54:52,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:54:52,500 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:52,500 INFO L82 PathProgramCache]: Analyzing trace with hash 89599380, now seen corresponding path program 1 times [2020-10-14 02:54:52,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:52,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221695317] [2020-10-14 02:54:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:53,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:53,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 02:54:53,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:54:53,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-14 02:54:53,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:53,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 02:54:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 02:54:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:53,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:53,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:53,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:53,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:53,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:54:53,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:53,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:53,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:53,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:53,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:54:53,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 02:54:53,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:53,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:54:53,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:54:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:54:53,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221695317] [2020-10-14 02:54:53,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:53,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:54:53,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141393938] [2020-10-14 02:54:53,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:54:53,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:53,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:54:53,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:54:53,495 INFO L87 Difference]: Start difference. First operand 8571 states and 11821 transitions. Second operand 6 states. [2020-10-14 02:55:14,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:55:14,866 INFO L93 Difference]: Finished difference Result 21810 states and 31578 transitions. [2020-10-14 02:55:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:55:14,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-14 02:55:14,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:55:14,925 INFO L225 Difference]: With dead ends: 21810 [2020-10-14 02:55:14,925 INFO L226 Difference]: Without dead ends: 13245 [2020-10-14 02:55:14,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:55:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13245 states. [2020-10-14 02:55:15,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13245 to 13229. [2020-10-14 02:55:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13229 states. [2020-10-14 02:55:15,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13229 states to 13229 states and 18341 transitions. [2020-10-14 02:55:15,261 INFO L78 Accepts]: Start accepts. Automaton has 13229 states and 18341 transitions. Word has length 134 [2020-10-14 02:55:15,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:55:15,262 INFO L479 AbstractCegarLoop]: Abstraction has 13229 states and 18341 transitions. [2020-10-14 02:55:15,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:55:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 13229 states and 18341 transitions. [2020-10-14 02:55:15,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 02:55:15,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:55:15,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:55:15,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:55:15,270 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:55:15,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:55:15,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1779594427, now seen corresponding path program 1 times [2020-10-14 02:55:15,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:55:15,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180555112] [2020-10-14 02:55:15,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:55:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:15,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:16,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:16,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 02:55:16,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:55:16,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-14 02:55:16,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:16,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 02:55:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 02:55:16,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:16,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:55:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:16,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:16,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:55:16,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:55:16,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:16,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:55:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:55:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:55:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:16,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:16,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:16,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:55:16,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:16,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 02:55:16,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:16,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 02:55:16,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:55:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:55:17,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180555112] [2020-10-14 02:55:17,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:55:17,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:55:17,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116655986] [2020-10-14 02:55:17,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:55:17,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:55:17,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:55:17,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:55:17,112 INFO L87 Difference]: Start difference. First operand 13229 states and 18341 transitions. Second operand 5 states. [2020-10-14 02:55:30,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:55:30,645 INFO L93 Difference]: Finished difference Result 39651 states and 56652 transitions. [2020-10-14 02:55:30,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:55:30,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-14 02:55:30,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:55:30,770 INFO L225 Difference]: With dead ends: 39651 [2020-10-14 02:55:30,771 INFO L226 Difference]: Without dead ends: 26428 [2020-10-14 02:55:30,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:55:30,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26428 states. [2020-10-14 02:55:31,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26428 to 24874. [2020-10-14 02:55:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24874 states. [2020-10-14 02:55:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24874 states to 24874 states and 33085 transitions. [2020-10-14 02:55:31,378 INFO L78 Accepts]: Start accepts. Automaton has 24874 states and 33085 transitions. Word has length 171 [2020-10-14 02:55:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:55:31,379 INFO L479 AbstractCegarLoop]: Abstraction has 24874 states and 33085 transitions. [2020-10-14 02:55:31,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:55:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24874 states and 33085 transitions. [2020-10-14 02:55:31,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 02:55:31,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:55:31,388 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:55:31,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:55:31,388 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:55:31,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:55:31,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1688698183, now seen corresponding path program 1 times [2020-10-14 02:55:31,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:55:31,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767987864] [2020-10-14 02:55:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:55:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:31,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:32,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:33,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:33,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 02:55:33,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:55:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1716 [2020-10-14 02:55:33,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:33,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 02:55:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 02:55:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:33,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:55:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:33,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:33,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:33,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:55:33,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:55:33,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:33,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:55:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:33,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:55:33,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:55:33,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:55:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:33,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:33,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 02:55:33,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:33,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 02:55:33,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:33,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 02:55:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:55:33,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767987864] [2020-10-14 02:55:33,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:55:33,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:55:33,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43581503] [2020-10-14 02:55:33,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:55:33,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:55:33,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:55:33,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:55:33,525 INFO L87 Difference]: Start difference. First operand 24874 states and 33085 transitions. Second operand 5 states. [2020-10-14 02:55:46,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:55:46,205 INFO L93 Difference]: Finished difference Result 53660 states and 73005 transitions. [2020-10-14 02:55:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:55:46,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 02:55:46,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:55:46,406 INFO L225 Difference]: With dead ends: 53660 [2020-10-14 02:55:46,406 INFO L226 Difference]: Without dead ends: 28792 [2020-10-14 02:55:46,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:55:46,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28792 states. [2020-10-14 02:55:46,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28792 to 27997. [2020-10-14 02:55:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27997 states. [2020-10-14 02:55:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27997 states to 27997 states and 38216 transitions. [2020-10-14 02:55:46,963 INFO L78 Accepts]: Start accepts. Automaton has 27997 states and 38216 transitions. Word has length 193 [2020-10-14 02:55:46,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:55:46,964 INFO L479 AbstractCegarLoop]: Abstraction has 27997 states and 38216 transitions. [2020-10-14 02:55:46,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:55:46,964 INFO L276 IsEmpty]: Start isEmpty. Operand 27997 states and 38216 transitions. [2020-10-14 02:55:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2020-10-14 02:55:47,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:55:47,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:55:47,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:55:47,035 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:55:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:55:47,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1209673639, now seen corresponding path program 1 times [2020-10-14 02:55:47,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:55:47,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677194319] [2020-10-14 02:55:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:55:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:47,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:52,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:52,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 661 [2020-10-14 02:55:52,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:55:52,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 02:55:52,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:52,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 607 [2020-10-14 02:55:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 02:55:52,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:52,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:55:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:52,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:52,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:55:52,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:52,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:55:52,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:52,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:55:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:55:52,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:52,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:55:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:52,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:53,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:53,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-14 02:55:53,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-14 02:55:53,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:53,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 592 [2020-10-14 02:55:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:53,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:55:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:54,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:54,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-14 02:55:54,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-14 02:55:54,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:54,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-14 02:55:54,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:54,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 02:55:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:54,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:54,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:55:54,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:54,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 02:55:54,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:54,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:55:54,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:55:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:55:55,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677194319] [2020-10-14 02:55:55,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:55:55,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:55:55,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881234003] [2020-10-14 02:55:55,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:55:55,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:55:55,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:55:55,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:55:55,354 INFO L87 Difference]: Start difference. First operand 27997 states and 38216 transitions. Second operand 5 states. [2020-10-14 02:56:11,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:56:11,118 INFO L93 Difference]: Finished difference Result 80790 states and 114196 transitions. [2020-10-14 02:56:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:56:11,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 647 [2020-10-14 02:56:11,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:56:11,320 INFO L225 Difference]: With dead ends: 80790 [2020-10-14 02:56:11,321 INFO L226 Difference]: Without dead ends: 52799 [2020-10-14 02:56:11,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:56:11,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52799 states. [2020-10-14 02:56:12,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52799 to 50476. [2020-10-14 02:56:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50476 states. [2020-10-14 02:56:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50476 states to 50476 states and 68273 transitions. [2020-10-14 02:56:12,269 INFO L78 Accepts]: Start accepts. Automaton has 50476 states and 68273 transitions. Word has length 647 [2020-10-14 02:56:12,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:56:12,270 INFO L479 AbstractCegarLoop]: Abstraction has 50476 states and 68273 transitions. [2020-10-14 02:56:12,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:56:12,270 INFO L276 IsEmpty]: Start isEmpty. Operand 50476 states and 68273 transitions. [2020-10-14 02:56:12,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2020-10-14 02:56:12,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:56:12,403 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:56:12,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:56:12,403 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:56:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:56:12,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1062754787, now seen corresponding path program 1 times [2020-10-14 02:56:12,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:56:12,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394306825] [2020-10-14 02:56:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:56:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:17,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:17,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 756 [2020-10-14 02:56:17,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:56:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-14 02:56:17,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:17,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 02:56:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:56:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 698 [2020-10-14 02:56:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:17,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:56:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:17,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:17,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:17,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:56:17,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:17,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:56:17,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:17,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:56:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:56:17,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:17,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:56:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:19,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:19,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 699 [2020-10-14 02:56:19,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1664 [2020-10-14 02:56:19,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:19,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 02:56:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:56:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 699 [2020-10-14 02:56:19,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:20,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:56:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:20,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:20,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:20,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-14 02:56:20,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:20,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-14 02:56:20,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:20,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 02:56:20,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:56:20,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 411 [2020-10-14 02:56:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:56:21,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 02:56:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:21,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:21,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:21,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 02:56:21,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 701 [2020-10-14 02:56:21,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:21,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:56:21,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:56:21,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 02:56:21,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:56:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:56:24,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394306825] [2020-10-14 02:56:24,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:56:24,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 02:56:24,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702414585] [2020-10-14 02:56:24,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:56:24,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:56:24,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:56:24,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:56:24,335 INFO L87 Difference]: Start difference. First operand 50476 states and 68273 transitions. Second operand 7 states. [2020-10-14 02:56:42,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:56:42,501 INFO L93 Difference]: Finished difference Result 124647 states and 174598 transitions. [2020-10-14 02:56:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:56:42,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 742 [2020-10-14 02:56:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:56:42,750 INFO L225 Difference]: With dead ends: 124647 [2020-10-14 02:56:42,751 INFO L226 Difference]: Without dead ends: 66403 [2020-10-14 02:56:42,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:56:42,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66403 states. [2020-10-14 02:56:44,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66403 to 63243. [2020-10-14 02:56:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63243 states. [2020-10-14 02:56:44,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63243 states to 63243 states and 82857 transitions. [2020-10-14 02:56:44,319 INFO L78 Accepts]: Start accepts. Automaton has 63243 states and 82857 transitions. Word has length 742 [2020-10-14 02:56:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:56:44,322 INFO L479 AbstractCegarLoop]: Abstraction has 63243 states and 82857 transitions. [2020-10-14 02:56:44,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:56:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 63243 states and 82857 transitions. [2020-10-14 02:56:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-10-14 02:56:44,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:56:44,438 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:56:44,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:56:44,439 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:56:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:56:44,440 INFO L82 PathProgramCache]: Analyzing trace with hash -445144497, now seen corresponding path program 1 times [2020-10-14 02:56:44,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:56:44,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262537234] [2020-10-14 02:56:44,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:56:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:44,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:44,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:49,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:49,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-14 02:56:49,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:56:49,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-14 02:56:49,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:49,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:56:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:56:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 02:56:49,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:49,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:56:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:49,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:49,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:49,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:56:49,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:49,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:56:49,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:49,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:49,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:56:49,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:49,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:56:49,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:49,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:56:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:49,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:49,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:49,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:56:49,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:49,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 02:56:49,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:49,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:56:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:56:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:56:49,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:50,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 02:56:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:50,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:50,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 699 [2020-10-14 02:56:50,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 02:56:50,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:50,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:56:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 696 [2020-10-14 02:56:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:56:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:50,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:56:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:50,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:50,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-14 02:56:50,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 02:56:50,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:50,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:56:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:56:50,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:56:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 02:56:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:50,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:50,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:50,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 02:56:50,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:50,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 02:56:50,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:50,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:50,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:56:50,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:50,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:56:50,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:56:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 82 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 02:56:51,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262537234] [2020-10-14 02:56:51,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:56:51,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:56:51,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490767652] [2020-10-14 02:56:51,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:56:51,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:56:51,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:56:51,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:56:51,585 INFO L87 Difference]: Start difference. First operand 63243 states and 82857 transitions. Second operand 8 states. [2020-10-14 02:57:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:57:20,145 INFO L93 Difference]: Finished difference Result 145131 states and 196417 transitions. [2020-10-14 02:57:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 02:57:20,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 815 [2020-10-14 02:57:20,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:57:20,357 INFO L225 Difference]: With dead ends: 145131 [2020-10-14 02:57:20,357 INFO L226 Difference]: Without dead ends: 81894 [2020-10-14 02:57:20,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 02:57:20,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81894 states. [2020-10-14 02:57:21,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81894 to 80254. [2020-10-14 02:57:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80254 states. [2020-10-14 02:57:21,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80254 states to 80254 states and 98540 transitions. [2020-10-14 02:57:21,995 INFO L78 Accepts]: Start accepts. Automaton has 80254 states and 98540 transitions. Word has length 815 [2020-10-14 02:57:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:57:21,996 INFO L479 AbstractCegarLoop]: Abstraction has 80254 states and 98540 transitions. [2020-10-14 02:57:21,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:57:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 80254 states and 98540 transitions. [2020-10-14 02:57:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2020-10-14 02:57:22,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:22,173 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:57:22,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:57:22,174 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:22,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:22,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1695876413, now seen corresponding path program 1 times [2020-10-14 02:57:22,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:22,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145221264] [2020-10-14 02:57:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking...