/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-buckets-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:20:42,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:20:42,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:20:42,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:20:42,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:20:42,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:20:42,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:20:42,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:20:42,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:20:42,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:20:42,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:20:42,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:20:42,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:20:42,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:20:42,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:20:42,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:20:42,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:20:42,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:20:42,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:20:42,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:20:42,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:20:42,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:20:42,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:20:42,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:20:42,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:20:42,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:20:42,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:20:42,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:20:42,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:20:42,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:20:42,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:20:42,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:20:42,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:20:42,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:20:42,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:20:42,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:20:42,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:20:42,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:20:42,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:20:42,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:20:42,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:20:42,284 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 23:20:42,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:20:42,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:20:42,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:20:42,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:20:42,308 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:20:42,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:20:42,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:20:42,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:20:42,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:20:42,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:20:42,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:20:42,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:20:42,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:20:42,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:20:42,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:20:42,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:20:42,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:20:42,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:20:42,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:20:42,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:20:42,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:20:42,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:20:42,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:20:42,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:20:42,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:20:42,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:20:42,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:20:42,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:20:42,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:20:42,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:20:42,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:20:42,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:20:42,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:20:42,622 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:20:42,623 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:20:42,624 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-buckets-1.i [2020-10-14 23:20:42,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ad2dc6f2/f973affdf1004f7488309e45efe1972b/FLAGf25130bbb [2020-10-14 23:20:43,224 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:20:43,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-buckets-1.i [2020-10-14 23:20:43,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ad2dc6f2/f973affdf1004f7488309e45efe1972b/FLAGf25130bbb [2020-10-14 23:20:43,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ad2dc6f2/f973affdf1004f7488309e45efe1972b [2020-10-14 23:20:43,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:20:43,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:20:43,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:43,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:20:43,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:20:43,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:43" (1/1) ... [2020-10-14 23:20:43,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b0cb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:43, skipping insertion in model container [2020-10-14 23:20:43,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:43" (1/1) ... [2020-10-14 23:20:43,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:20:43,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:20:44,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:44,068 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:20:44,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:44,173 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:20:44,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:44 WrapperNode [2020-10-14 23:20:44,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:44,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:20:44,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:20:44,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:20:44,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:44" (1/1) ... [2020-10-14 23:20:44,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:44" (1/1) ... [2020-10-14 23:20:44,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:44" (1/1) ... [2020-10-14 23:20:44,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:44" (1/1) ... [2020-10-14 23:20:44,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:44" (1/1) ... [2020-10-14 23:20:44,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:44" (1/1) ... [2020-10-14 23:20:44,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:44" (1/1) ... [2020-10-14 23:20:44,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:20:44,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:20:44,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:20:44,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:20:44,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:44" (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 23:20:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:20:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:20:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:20:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:20:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:20:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:20:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:20:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:20:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:20:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:20:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:20:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:20:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:20:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:20:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:20:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:20:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:20:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:20:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:20:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:20:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:20:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:20:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:20:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:20:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:20:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:20:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:20:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:20:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:20:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:20:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:20:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:20:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:20:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:20:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:20:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:20:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:20:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:20:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:20:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:20:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:20:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:20:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:20:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:20:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:20:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:20:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:20:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:20:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:20:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:20:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:20:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:20:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:20:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:20:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:20:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:20:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:20:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:20:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:20:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:20:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:20:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:20:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:20:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:20:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:20:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:20:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:20:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:20:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:20:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:20:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:20:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:20:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:20:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:20:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:20:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:20:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:20:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:20:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:20:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:20:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:20:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:20:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:20:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:20:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:20:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:20:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:20:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:20:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:20:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:20:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:20:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:20:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:20:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:20:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:20:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:20:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:20:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:20:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:20:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:20:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:20:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:20:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:20:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:20:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:20:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:20:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:20:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:20:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:20:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:20:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:20:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:20:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:20:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:20:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:20:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:20:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:20:44,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:20:44,983 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-14 23:20:44,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:44 BoogieIcfgContainer [2020-10-14 23:20:44,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:20:44,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:20:44,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:20:44,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:20:44,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:20:43" (1/3) ... [2020-10-14 23:20:44,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757a553f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:44, skipping insertion in model container [2020-10-14 23:20:44,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:44" (2/3) ... [2020-10-14 23:20:44,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757a553f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:44, skipping insertion in model container [2020-10-14 23:20:45,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:44" (3/3) ... [2020-10-14 23:20:45,002 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-buckets-1.i [2020-10-14 23:20:45,015 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:20:45,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-14 23:20:45,043 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-14 23:20:45,082 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:20:45,083 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:20:45,083 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:20:45,084 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:20:45,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:20:45,084 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:20:45,085 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:20:45,085 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:20:45,116 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-14 23:20:45,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 23:20:45,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:45,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:45,138 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:45,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:45,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1953697339, now seen corresponding path program 1 times [2020-10-14 23:20:45,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:45,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628827212] [2020-10-14 23:20:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:45,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:45,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:45,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:20:45,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-14 23:20:45,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:45,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:20:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:20:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:20:45,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:45,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:45,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:45,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:45,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:20:45,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:45,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:45,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:45,890 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 23:20:45,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628827212] [2020-10-14 23:20:45,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:45,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:20:45,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501502924] [2020-10-14 23:20:45,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:20:45,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:45,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:20:45,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:20:45,917 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-10-14 23:20:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:46,181 INFO L93 Difference]: Finished difference Result 118 states and 194 transitions. [2020-10-14 23:20:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:20:46,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-14 23:20:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:46,194 INFO L225 Difference]: With dead ends: 118 [2020-10-14 23:20:46,195 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 23:20:46,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:46,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 23:20:46,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 45. [2020-10-14 23:20:46,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 23:20:46,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-14 23:20:46,248 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 12 [2020-10-14 23:20:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:46,249 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-14 23:20:46,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:20:46,249 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-14 23:20:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 23:20:46,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:46,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:46,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:20:46,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:46,251 INFO L82 PathProgramCache]: Analyzing trace with hash 471340906, now seen corresponding path program 1 times [2020-10-14 23:20:46,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:46,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355037365] [2020-10-14 23:20:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:46,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:46,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:20:46,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:46,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-14 23:20:46,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:46,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:20:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:46,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:46,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:46,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:46,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:46,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:46,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:20:46,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:46,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:46,721 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 23:20:46,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355037365] [2020-10-14 23:20:46,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:46,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:20:46,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531573780] [2020-10-14 23:20:46,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:46,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:46,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:46,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:46,729 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 6 states. [2020-10-14 23:20:47,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:47,092 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2020-10-14 23:20:47,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:20:47,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-14 23:20:47,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:47,099 INFO L225 Difference]: With dead ends: 67 [2020-10-14 23:20:47,099 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:20:47,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:20:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:20:47,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-14 23:20:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:20:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-10-14 23:20:47,124 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 13 [2020-10-14 23:20:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:47,125 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-10-14 23:20:47,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-10-14 23:20:47,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:20:47,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:47,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:47,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:20:47,129 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:47,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:47,132 INFO L82 PathProgramCache]: Analyzing trace with hash 602561823, now seen corresponding path program 1 times [2020-10-14 23:20:47,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:47,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517536682] [2020-10-14 23:20:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:47,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:47,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:47,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:20:47,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 23:20:47,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:47,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:20:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:20:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:20:47,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:47,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:47,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:47,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:47,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:47,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:47,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:47,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:47,274 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 23:20:47,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517536682] [2020-10-14 23:20:47,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:47,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:20:47,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228055419] [2020-10-14 23:20:47,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:20:47,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:47,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:20:47,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:20:47,277 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 4 states. [2020-10-14 23:20:47,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:47,486 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-10-14 23:20:47,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:20:47,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 23:20:47,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:47,488 INFO L225 Difference]: With dead ends: 49 [2020-10-14 23:20:47,488 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 23:20:47,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:20:47,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 23:20:47,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-14 23:20:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:20:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-10-14 23:20:47,497 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 14 [2020-10-14 23:20:47,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:47,497 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-10-14 23:20:47,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:20:47,498 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-10-14 23:20:47,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:20:47,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:47,499 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:47,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:20:47,499 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:47,500 INFO L82 PathProgramCache]: Analyzing trace with hash 2131101984, now seen corresponding path program 1 times [2020-10-14 23:20:47,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:47,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936975963] [2020-10-14 23:20:47,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:47,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:47,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:20:47,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:47,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 23:20:47,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:47,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:20:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:20:47,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:47,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:47,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:47,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:47,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:47,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:47,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:47,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:47,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936975963] [2020-10-14 23:20:47,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:47,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:20:47,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667590681] [2020-10-14 23:20:47,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:20:47,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:47,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:20:47,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:47,962 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 8 states. [2020-10-14 23:20:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:48,598 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2020-10-14 23:20:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:20:48,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-14 23:20:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:48,600 INFO L225 Difference]: With dead ends: 65 [2020-10-14 23:20:48,600 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:20:48,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:20:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:20:48,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-14 23:20:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 23:20:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-14 23:20:48,608 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 19 [2020-10-14 23:20:48,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:48,609 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-14 23:20:48,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:20:48,609 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-14 23:20:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:20:48,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:48,610 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:48,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:20:48,610 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:48,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:48,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1728098773, now seen corresponding path program 1 times [2020-10-14 23:20:48,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:48,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990718] [2020-10-14 23:20:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:48,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:48,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:48,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:49,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:49,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:20:49,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:20:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-14 23:20:49,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:49,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:20:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:20:49,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:49,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:49,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:49,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:49,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:49,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:49,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:49,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:49,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:49,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:49,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:49,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:49,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990718] [2020-10-14 23:20:49,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:49,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:20:49,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092029292] [2020-10-14 23:20:49,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:20:49,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:49,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:20:49,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:49,214 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 8 states. [2020-10-14 23:20:49,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:49,712 INFO L93 Difference]: Finished difference Result 101 states and 125 transitions. [2020-10-14 23:20:49,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:20:49,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-14 23:20:49,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:49,714 INFO L225 Difference]: With dead ends: 101 [2020-10-14 23:20:49,714 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 23:20:49,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:49,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 23:20:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 60. [2020-10-14 23:20:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 23:20:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2020-10-14 23:20:49,725 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 20 [2020-10-14 23:20:49,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:49,725 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2020-10-14 23:20:49,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:20:49,726 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2020-10-14 23:20:49,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:20:49,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:49,727 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:49,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:20:49,728 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:49,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:49,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1450874320, now seen corresponding path program 2 times [2020-10-14 23:20:49,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:49,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026442132] [2020-10-14 23:20:49,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:49,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:50,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:50,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:50,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:20:50,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:20:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-14 23:20:50,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:50,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:20:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:20:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:50,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:50,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:50,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:50,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:50,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:50,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:50,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:50,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:50,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026442132] [2020-10-14 23:20:50,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:50,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:20:50,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344351771] [2020-10-14 23:20:50,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:20:50,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:50,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:20:50,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:20:50,742 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 9 states. [2020-10-14 23:20:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:51,257 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2020-10-14 23:20:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:20:51,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-14 23:20:51,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:51,259 INFO L225 Difference]: With dead ends: 107 [2020-10-14 23:20:51,259 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 23:20:51,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:20:51,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 23:20:51,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2020-10-14 23:20:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 23:20:51,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2020-10-14 23:20:51,286 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 22 [2020-10-14 23:20:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:51,287 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2020-10-14 23:20:51,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:20:51,287 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2020-10-14 23:20:51,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:20:51,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:51,290 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:51,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:20:51,291 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:51,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:51,291 INFO L82 PathProgramCache]: Analyzing trace with hash -127654851, now seen corresponding path program 2 times [2020-10-14 23:20:51,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:51,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872453752] [2020-10-14 23:20:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:51,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:51,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:20:51,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 23:20:51,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:51,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:51,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:20:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:20:51,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:51,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:52,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:52,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:52,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:52,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:52,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:52,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:52,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:52,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872453752] [2020-10-14 23:20:52,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:52,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:20:52,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467466927] [2020-10-14 23:20:52,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:20:52,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:52,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:20:52,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:20:52,021 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 10 states. [2020-10-14 23:20:52,414 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-14 23:20:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:52,856 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2020-10-14 23:20:52,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:20:52,857 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-14 23:20:52,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:52,858 INFO L225 Difference]: With dead ends: 82 [2020-10-14 23:20:52,858 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 23:20:52,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:20:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 23:20:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2020-10-14 23:20:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 23:20:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2020-10-14 23:20:52,873 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 24 [2020-10-14 23:20:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:52,873 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2020-10-14 23:20:52,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:20:52,873 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2020-10-14 23:20:52,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:20:52,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:52,875 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:52,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:20:52,875 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:52,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1572698059, now seen corresponding path program 3 times [2020-10-14 23:20:52,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:52,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16575095] [2020-10-14 23:20:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:52,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:53,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:53,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:20:53,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 23:20:53,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:53,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:20:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:20:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:53,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:53,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:53,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:53,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:53,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:53,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:53,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:53,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:53,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:20:53,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16575095] [2020-10-14 23:20:53,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:53,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 23:20:53,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993890129] [2020-10-14 23:20:53,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:20:53,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:53,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:20:53,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:53,232 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 8 states. [2020-10-14 23:20:53,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:53,722 INFO L93 Difference]: Finished difference Result 132 states and 161 transitions. [2020-10-14 23:20:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:20:53,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-14 23:20:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:53,724 INFO L225 Difference]: With dead ends: 132 [2020-10-14 23:20:53,725 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 23:20:53,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:20:53,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 23:20:53,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 74. [2020-10-14 23:20:53,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 23:20:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2020-10-14 23:20:53,737 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 24 [2020-10-14 23:20:53,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:53,737 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2020-10-14 23:20:53,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:20:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2020-10-14 23:20:53,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:20:53,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:53,742 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:53,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:20:53,743 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:53,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:53,743 INFO L82 PathProgramCache]: Analyzing trace with hash -314905825, now seen corresponding path program 1 times [2020-10-14 23:20:53,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:53,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975280979] [2020-10-14 23:20:53,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:53,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:53,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:53,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:20:53,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:53,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 23:20:53,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:53,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:20:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:20:53,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:54,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:54,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:54,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:54,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:54,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:54,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:54,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:54,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:20:54,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975280979] [2020-10-14 23:20:54,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:54,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:20:54,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085783047] [2020-10-14 23:20:54,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:20:54,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:54,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:20:54,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:20:54,147 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand 9 states. [2020-10-14 23:20:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:55,028 INFO L93 Difference]: Finished difference Result 169 states and 205 transitions. [2020-10-14 23:20:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:20:55,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-14 23:20:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:55,030 INFO L225 Difference]: With dead ends: 169 [2020-10-14 23:20:55,030 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 23:20:55,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:20:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 23:20:55,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 101. [2020-10-14 23:20:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 23:20:55,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2020-10-14 23:20:55,040 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 25 [2020-10-14 23:20:55,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:55,041 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2020-10-14 23:20:55,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:20:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2020-10-14 23:20:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:20:55,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:55,042 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:55,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:20:55,043 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:55,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1335974179, now seen corresponding path program 1 times [2020-10-14 23:20:55,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:55,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123929045] [2020-10-14 23:20:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:55,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:55,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:55,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:20:55,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 23:20:55,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:55,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:20:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:20:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:55,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:55,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:55,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:55,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:55,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:55,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:55,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:55,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123929045] [2020-10-14 23:20:55,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:55,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:20:55,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768609560] [2020-10-14 23:20:55,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:20:55,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:55,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:20:55,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:20:55,518 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand 10 states. [2020-10-14 23:20:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:56,718 INFO L93 Difference]: Finished difference Result 169 states and 207 transitions. [2020-10-14 23:20:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:20:56,718 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-14 23:20:56,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:56,720 INFO L225 Difference]: With dead ends: 169 [2020-10-14 23:20:56,720 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 23:20:56,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:20:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 23:20:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 101. [2020-10-14 23:20:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 23:20:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2020-10-14 23:20:56,729 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 25 [2020-10-14 23:20:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:56,730 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2020-10-14 23:20:56,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:20:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2020-10-14 23:20:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:20:56,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:56,732 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:20:56,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:20:56,732 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:56,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:56,733 INFO L82 PathProgramCache]: Analyzing trace with hash -791238755, now seen corresponding path program 1 times [2020-10-14 23:20:56,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:56,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358189818] [2020-10-14 23:20:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:57,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:57,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:20:57,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:57,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-14 23:20:57,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:57,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:20:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:20:57,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:58,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:58,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:58,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:58,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:58,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:58,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:58,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:58,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358189818] [2020-10-14 23:20:58,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:58,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:20:58,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161349846] [2020-10-14 23:20:58,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:20:58,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:58,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:20:58,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:58,172 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand 11 states. [2020-10-14 23:20:58,589 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-14 23:20:59,095 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-10-14 23:20:59,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:59,765 INFO L93 Difference]: Finished difference Result 144 states and 176 transitions. [2020-10-14 23:20:59,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:20:59,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-14 23:20:59,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:59,767 INFO L225 Difference]: With dead ends: 144 [2020-10-14 23:20:59,767 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 23:20:59,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:20:59,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 23:20:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2020-10-14 23:20:59,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 23:20:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2020-10-14 23:20:59,779 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 28 [2020-10-14 23:20:59,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:59,780 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2020-10-14 23:20:59,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:20:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2020-10-14 23:20:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:20:59,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:59,781 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:59,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:20:59,782 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:59,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:59,782 INFO L82 PathProgramCache]: Analyzing trace with hash -300190912, now seen corresponding path program 3 times [2020-10-14 23:20:59,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:59,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131092698] [2020-10-14 23:20:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:59,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:00,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:00,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:21:00,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:00,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 23:21:00,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:00,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:21:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:21:00,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:00,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:00,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:00,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:00,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:00,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:00,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:00,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:00,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:00,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:00,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:00,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:00,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131092698] [2020-10-14 23:21:00,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:00,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:21:00,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733832377] [2020-10-14 23:21:00,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:21:00,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:00,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:21:00,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:21:00,457 INFO L87 Difference]: Start difference. First operand 117 states and 141 transitions. Second operand 9 states. [2020-10-14 23:21:00,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:00,982 INFO L93 Difference]: Finished difference Result 132 states and 157 transitions. [2020-10-14 23:21:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:21:00,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-14 23:21:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:00,984 INFO L225 Difference]: With dead ends: 132 [2020-10-14 23:21:00,984 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 23:21:00,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:00,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 23:21:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-14 23:21:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 23:21:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 127 transitions. [2020-10-14 23:21:01,001 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 127 transitions. Word has length 29 [2020-10-14 23:21:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:01,001 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 127 transitions. [2020-10-14 23:21:01,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:21:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 127 transitions. [2020-10-14 23:21:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:21:01,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:01,003 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:01,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:21:01,003 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:01,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:01,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1370457479, now seen corresponding path program 1 times [2020-10-14 23:21:01,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:01,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974672222] [2020-10-14 23:21:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:01,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:01,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:01,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:21:01,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-10-14 23:21:01,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:01,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:21:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:21:01,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:02,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:02,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:02,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:02,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:02,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:02,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:02,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:02,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:02,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:02,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974672222] [2020-10-14 23:21:02,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:02,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:02,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966419711] [2020-10-14 23:21:02,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:02,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:02,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:02,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:02,082 INFO L87 Difference]: Start difference. First operand 104 states and 127 transitions. Second operand 11 states. [2020-10-14 23:21:03,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:03,448 INFO L93 Difference]: Finished difference Result 147 states and 183 transitions. [2020-10-14 23:21:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:21:03,448 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-14 23:21:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:03,449 INFO L225 Difference]: With dead ends: 147 [2020-10-14 23:21:03,450 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 23:21:03,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:21:03,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 23:21:03,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 118. [2020-10-14 23:21:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 23:21:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 145 transitions. [2020-10-14 23:21:03,459 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 145 transitions. Word has length 29 [2020-10-14 23:21:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:03,460 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 145 transitions. [2020-10-14 23:21:03,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 145 transitions. [2020-10-14 23:21:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:21:03,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:03,461 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:03,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:21:03,462 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:03,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:03,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2111760066, now seen corresponding path program 1 times [2020-10-14 23:21:03,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:03,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098377283] [2020-10-14 23:21:03,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:03,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:03,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:04,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:04,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:21:04,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:04,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-14 23:21:04,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:04,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:21:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:21:04,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:04,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:04,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:04,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:04,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:04,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:04,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:04,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:04,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:04,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:04,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098377283] [2020-10-14 23:21:04,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:04,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:21:04,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695491096] [2020-10-14 23:21:04,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:21:04,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:04,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:21:04,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:21:04,579 INFO L87 Difference]: Start difference. First operand 118 states and 145 transitions. Second operand 10 states. [2020-10-14 23:21:05,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:05,267 INFO L93 Difference]: Finished difference Result 182 states and 225 transitions. [2020-10-14 23:21:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:21:05,268 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-14 23:21:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:05,270 INFO L225 Difference]: With dead ends: 182 [2020-10-14 23:21:05,270 INFO L226 Difference]: Without dead ends: 169 [2020-10-14 23:21:05,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:05,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-14 23:21:05,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 142. [2020-10-14 23:21:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 23:21:05,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 177 transitions. [2020-10-14 23:21:05,282 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 177 transitions. Word has length 32 [2020-10-14 23:21:05,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:05,282 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 177 transitions. [2020-10-14 23:21:05,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:21:05,282 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 177 transitions. [2020-10-14 23:21:05,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:21:05,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:05,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:05,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:21:05,283 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:05,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:05,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1147925536, now seen corresponding path program 1 times [2020-10-14 23:21:05,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:05,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766300513] [2020-10-14 23:21:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:05,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:05,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:05,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:07,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:07,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:21:07,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:21:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2517 [2020-10-14 23:21:07,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:07,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:21:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:21:07,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:08,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:08,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:08,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:08,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:08,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:08,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:08,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:08,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:08,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:08,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:08,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:08,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766300513] [2020-10-14 23:21:08,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:08,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:08,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932206551] [2020-10-14 23:21:08,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:08,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:08,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:08,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:08,286 INFO L87 Difference]: Start difference. First operand 142 states and 177 transitions. Second operand 12 states. [2020-10-14 23:21:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:09,447 INFO L93 Difference]: Finished difference Result 237 states and 293 transitions. [2020-10-14 23:21:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:21:09,448 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-14 23:21:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:09,450 INFO L225 Difference]: With dead ends: 237 [2020-10-14 23:21:09,450 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 23:21:09,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:21:09,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 23:21:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 179. [2020-10-14 23:21:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-14 23:21:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 224 transitions. [2020-10-14 23:21:09,466 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 224 transitions. Word has length 33 [2020-10-14 23:21:09,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:09,466 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 224 transitions. [2020-10-14 23:21:09,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 224 transitions. [2020-10-14 23:21:09,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:21:09,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:09,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:09,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:21:09,468 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:09,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:09,468 INFO L82 PathProgramCache]: Analyzing trace with hash 842719644, now seen corresponding path program 1 times [2020-10-14 23:21:09,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:09,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173424573] [2020-10-14 23:21:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:09,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:09,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:09,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:21:09,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-14 23:21:09,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:09,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:21:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:21:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:10,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:10,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:10,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:10,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:10,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:10,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:10,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173424573] [2020-10-14 23:21:10,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:10,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:21:10,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978079425] [2020-10-14 23:21:10,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:21:10,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:10,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:21:10,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:21:10,211 INFO L87 Difference]: Start difference. First operand 179 states and 224 transitions. Second operand 9 states. [2020-10-14 23:21:11,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:11,170 INFO L93 Difference]: Finished difference Result 253 states and 322 transitions. [2020-10-14 23:21:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:21:11,170 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-14 23:21:11,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:11,172 INFO L225 Difference]: With dead ends: 253 [2020-10-14 23:21:11,172 INFO L226 Difference]: Without dead ends: 232 [2020-10-14 23:21:11,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:11,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-14 23:21:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 195. [2020-10-14 23:21:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 23:21:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 245 transitions. [2020-10-14 23:21:11,190 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 245 transitions. Word has length 33 [2020-10-14 23:21:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:11,191 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 245 transitions. [2020-10-14 23:21:11,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:21:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 245 transitions. [2020-10-14 23:21:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:21:11,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:11,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:11,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:21:11,192 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:11,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:11,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1998888765, now seen corresponding path program 1 times [2020-10-14 23:21:11,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:11,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740049070] [2020-10-14 23:21:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:11,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:11,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:11,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:11,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:21:11,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:11,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-14 23:21:11,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:11,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:21:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:21:11,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:11,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:11,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:11,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:11,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:11,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:11,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:21:11,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740049070] [2020-10-14 23:21:11,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:21:11,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 23:21:11,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502095773] [2020-10-14 23:21:11,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:21:11,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:11,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:21:11,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:11,682 INFO L87 Difference]: Start difference. First operand 195 states and 245 transitions. Second operand 8 states. [2020-10-14 23:21:12,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:12,120 INFO L93 Difference]: Finished difference Result 245 states and 307 transitions. [2020-10-14 23:21:12,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:21:12,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-10-14 23:21:12,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:12,122 INFO L225 Difference]: With dead ends: 245 [2020-10-14 23:21:12,122 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 23:21:12,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 23:21:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-14 23:21:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-14 23:21:12,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 200 transitions. [2020-10-14 23:21:12,137 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 200 transitions. Word has length 34 [2020-10-14 23:21:12,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:12,137 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 200 transitions. [2020-10-14 23:21:12,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:21:12,137 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 200 transitions. [2020-10-14 23:21:12,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:21:12,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:12,138 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:12,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:21:12,139 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:12,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:12,139 INFO L82 PathProgramCache]: Analyzing trace with hash 793753725, now seen corresponding path program 1 times [2020-10-14 23:21:12,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:12,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128374528] [2020-10-14 23:21:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:12,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:12,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:12,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:21:12,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:12,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-14 23:21:12,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:12,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:12,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:21:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:21:12,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:12,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:12,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:12,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:12,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:12,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:12,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:12,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:12,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:12,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:12,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128374528] [2020-10-14 23:21:12,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:12,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:12,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718423977] [2020-10-14 23:21:12,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:12,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:12,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:12,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:12,949 INFO L87 Difference]: Start difference. First operand 163 states and 200 transitions. Second operand 12 states. [2020-10-14 23:21:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:13,977 INFO L93 Difference]: Finished difference Result 245 states and 303 transitions. [2020-10-14 23:21:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:13,978 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-14 23:21:13,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:13,980 INFO L225 Difference]: With dead ends: 245 [2020-10-14 23:21:13,980 INFO L226 Difference]: Without dead ends: 229 [2020-10-14 23:21:13,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:21:13,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-14 23:21:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 189. [2020-10-14 23:21:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 23:21:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 236 transitions. [2020-10-14 23:21:13,997 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 236 transitions. Word has length 34 [2020-10-14 23:21:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:13,997 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 236 transitions. [2020-10-14 23:21:13,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 236 transitions. [2020-10-14 23:21:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:21:13,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:13,998 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:13,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:21:13,998 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:13,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:13,999 INFO L82 PathProgramCache]: Analyzing trace with hash -298736789, now seen corresponding path program 1 times [2020-10-14 23:21:13,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:13,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502678191] [2020-10-14 23:21:13,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:14,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:14,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:14,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:14,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:14,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:21:14,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:21:14,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 909 [2020-10-14 23:21:14,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:14,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:14,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:21:14,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:14,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:21:14,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:15,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:15,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:15,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:15,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:15,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:15,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:15,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:21:15,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502678191] [2020-10-14 23:21:15,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:15,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:21:15,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309789792] [2020-10-14 23:21:15,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:21:15,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:15,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:21:15,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:21:15,019 INFO L87 Difference]: Start difference. First operand 189 states and 236 transitions. Second operand 9 states. [2020-10-14 23:21:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:15,406 INFO L93 Difference]: Finished difference Result 248 states and 309 transitions. [2020-10-14 23:21:15,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:21:15,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-14 23:21:15,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:15,407 INFO L225 Difference]: With dead ends: 248 [2020-10-14 23:21:15,407 INFO L226 Difference]: Without dead ends: 246 [2020-10-14 23:21:15,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-14 23:21:15,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 191. [2020-10-14 23:21:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 23:21:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 237 transitions. [2020-10-14 23:21:15,425 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 237 transitions. Word has length 34 [2020-10-14 23:21:15,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:15,425 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 237 transitions. [2020-10-14 23:21:15,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:21:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 237 transitions. [2020-10-14 23:21:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:21:15,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:15,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:15,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:21:15,426 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:15,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:15,427 INFO L82 PathProgramCache]: Analyzing trace with hash -930177231, now seen corresponding path program 1 times [2020-10-14 23:21:15,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:15,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313586462] [2020-10-14 23:21:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:15,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:15,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:16,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:16,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:21:16,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:16,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1212 [2020-10-14 23:21:16,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:16,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:16,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:16,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:21:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:16,951 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-14 23:21:17,300 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2020-10-14 23:21:17,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:17,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:17,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:17,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:17,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:17,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:17,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:21:17,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313586462] [2020-10-14 23:21:17,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:17,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:17,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571523367] [2020-10-14 23:21:17,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:17,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:17,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:17,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:17,702 INFO L87 Difference]: Start difference. First operand 191 states and 237 transitions. Second operand 14 states. [2020-10-14 23:21:18,224 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2020-10-14 23:21:18,828 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 113 [2020-10-14 23:21:19,114 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 97 [2020-10-14 23:21:19,375 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-14 23:21:19,516 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-14 23:21:20,054 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 116 [2020-10-14 23:21:20,436 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2020-10-14 23:21:20,786 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 88 [2020-10-14 23:21:21,004 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-10-14 23:21:21,392 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-14 23:21:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:21,877 INFO L93 Difference]: Finished difference Result 228 states and 279 transitions. [2020-10-14 23:21:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:21:21,878 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-14 23:21:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:21,879 INFO L225 Difference]: With dead ends: 228 [2020-10-14 23:21:21,879 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 23:21:21,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:21:21,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 23:21:21,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 201. [2020-10-14 23:21:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-14 23:21:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 248 transitions. [2020-10-14 23:21:21,899 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 248 transitions. Word has length 36 [2020-10-14 23:21:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:21,899 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 248 transitions. [2020-10-14 23:21:21,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 248 transitions. [2020-10-14 23:21:21,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:21:21,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:21,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:21,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:21:21,900 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:21,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:21,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1884819912, now seen corresponding path program 1 times [2020-10-14 23:21:21,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:21,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539722683] [2020-10-14 23:21:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:21,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:22,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:22,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:21:22,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:22,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 23:21:22,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:22,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:21:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:21:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:22,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:22,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:22,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:22,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:22,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:22,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:22,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:21:22,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539722683] [2020-10-14 23:21:22,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:22,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:21:22,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321211138] [2020-10-14 23:21:22,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:21:22,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:22,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:21:22,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:21:22,238 INFO L87 Difference]: Start difference. First operand 201 states and 248 transitions. Second operand 9 states. [2020-10-14 23:21:22,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:22,705 INFO L93 Difference]: Finished difference Result 253 states and 313 transitions. [2020-10-14 23:21:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:21:22,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-14 23:21:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:22,712 INFO L225 Difference]: With dead ends: 253 [2020-10-14 23:21:22,712 INFO L226 Difference]: Without dead ends: 179 [2020-10-14 23:21:22,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-14 23:21:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-14 23:21:22,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-14 23:21:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 216 transitions. [2020-10-14 23:21:22,733 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 216 transitions. Word has length 36 [2020-10-14 23:21:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:22,734 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 216 transitions. [2020-10-14 23:21:22,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:21:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 216 transitions. [2020-10-14 23:21:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:21:22,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:22,737 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:22,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:21:22,738 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:22,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:22,738 INFO L82 PathProgramCache]: Analyzing trace with hash 993050803, now seen corresponding path program 1 times [2020-10-14 23:21:22,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:22,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647382876] [2020-10-14 23:21:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:23,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:23,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:21:23,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:23,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-14 23:21:23,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:23,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:21:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:23,799 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-10-14 23:21:24,025 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2020-10-14 23:21:24,264 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2020-10-14 23:21:24,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:24,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:24,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:24,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:24,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:24,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:24,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:24,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:21:24,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647382876] [2020-10-14 23:21:24,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:24,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:24,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688043945] [2020-10-14 23:21:24,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:24,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:24,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:24,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:24,576 INFO L87 Difference]: Start difference. First operand 179 states and 216 transitions. Second operand 14 states. [2020-10-14 23:21:25,017 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 62 [2020-10-14 23:21:25,505 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2020-10-14 23:21:25,673 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 67 [2020-10-14 23:21:26,076 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2020-10-14 23:21:26,365 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 68 [2020-10-14 23:21:26,686 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 77 [2020-10-14 23:21:26,987 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 72 [2020-10-14 23:21:27,166 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2020-10-14 23:21:27,522 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 76 [2020-10-14 23:21:27,705 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2020-10-14 23:21:28,101 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2020-10-14 23:21:28,427 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2020-10-14 23:21:28,879 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2020-10-14 23:21:29,525 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 58 [2020-10-14 23:21:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:29,646 INFO L93 Difference]: Finished difference Result 329 states and 398 transitions. [2020-10-14 23:21:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:21:29,649 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-14 23:21:29,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:29,651 INFO L225 Difference]: With dead ends: 329 [2020-10-14 23:21:29,651 INFO L226 Difference]: Without dead ends: 318 [2020-10-14 23:21:29,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=302, Invalid=1104, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:21:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-14 23:21:29,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 191. [2020-10-14 23:21:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 23:21:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 234 transitions. [2020-10-14 23:21:29,671 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 234 transitions. Word has length 36 [2020-10-14 23:21:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:29,671 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 234 transitions. [2020-10-14 23:21:29,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 234 transitions. [2020-10-14 23:21:29,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:21:29,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:29,672 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:29,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:21:29,673 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:29,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:29,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1166726918, now seen corresponding path program 1 times [2020-10-14 23:21:29,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:29,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722218626] [2020-10-14 23:21:29,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:29,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:29,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:29,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:29,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:21:29,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 23:21:29,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:29,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:21:29,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:30,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:30,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:30,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:30,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:30,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:30,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:30,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722218626] [2020-10-14 23:21:30,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:30,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:21:30,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916375141] [2020-10-14 23:21:30,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:21:30,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:30,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:21:30,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:30,523 INFO L87 Difference]: Start difference. First operand 191 states and 234 transitions. Second operand 13 states. [2020-10-14 23:21:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:31,544 INFO L93 Difference]: Finished difference Result 225 states and 275 transitions. [2020-10-14 23:21:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:21:31,545 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 23:21:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:31,547 INFO L225 Difference]: With dead ends: 225 [2020-10-14 23:21:31,547 INFO L226 Difference]: Without dead ends: 209 [2020-10-14 23:21:31,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:21:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-14 23:21:31,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 197. [2020-10-14 23:21:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 23:21:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 242 transitions. [2020-10-14 23:21:31,566 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 242 transitions. Word has length 36 [2020-10-14 23:21:31,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:31,566 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 242 transitions. [2020-10-14 23:21:31,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:21:31,566 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 242 transitions. [2020-10-14 23:21:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:21:31,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:31,567 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:31,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:21:31,567 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:31,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:31,567 INFO L82 PathProgramCache]: Analyzing trace with hash 678206224, now seen corresponding path program 2 times [2020-10-14 23:21:31,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:31,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30066466] [2020-10-14 23:21:31,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:31,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:31,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:31,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:32,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:32,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:33,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:33,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:33,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:21:33,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:21:33,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-10-14 23:21:33,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:33,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:21:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:21:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:33,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:33,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:33,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:33,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:33,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:33,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:21:33,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30066466] [2020-10-14 23:21:33,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:33,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:21:33,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801007313] [2020-10-14 23:21:33,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:21:33,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:33,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:21:33,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:21:33,569 INFO L87 Difference]: Start difference. First operand 197 states and 242 transitions. Second operand 10 states. [2020-10-14 23:21:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:34,287 INFO L93 Difference]: Finished difference Result 373 states and 463 transitions. [2020-10-14 23:21:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:21:34,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-14 23:21:34,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:34,290 INFO L225 Difference]: With dead ends: 373 [2020-10-14 23:21:34,290 INFO L226 Difference]: Without dead ends: 292 [2020-10-14 23:21:34,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:21:34,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-14 23:21:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 232. [2020-10-14 23:21:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-14 23:21:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 284 transitions. [2020-10-14 23:21:34,316 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 284 transitions. Word has length 36 [2020-10-14 23:21:34,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:34,316 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 284 transitions. [2020-10-14 23:21:34,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:21:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 284 transitions. [2020-10-14 23:21:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:21:34,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:34,317 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:34,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:21:34,317 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:34,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:34,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1754182150, now seen corresponding path program 1 times [2020-10-14 23:21:34,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:34,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943965519] [2020-10-14 23:21:34,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:34,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:34,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:34,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:35,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:35,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:35,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:21:35,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:21:35,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-14 23:21:35,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:35,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:21:35,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:36,062 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-10-14 23:21:36,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:36,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:36,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:36,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:36,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:36,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:36,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:36,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:36,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943965519] [2020-10-14 23:21:36,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:36,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:21:36,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357567030] [2020-10-14 23:21:36,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:21:36,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:36,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:21:36,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:36,275 INFO L87 Difference]: Start difference. First operand 232 states and 284 transitions. Second operand 13 states. [2020-10-14 23:21:36,654 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2020-10-14 23:21:37,218 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2020-10-14 23:21:37,500 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2020-10-14 23:21:37,779 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2020-10-14 23:21:38,036 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-10-14 23:21:38,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:38,569 INFO L93 Difference]: Finished difference Result 347 states and 432 transitions. [2020-10-14 23:21:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:21:38,570 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-14 23:21:38,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:38,572 INFO L225 Difference]: With dead ends: 347 [2020-10-14 23:21:38,572 INFO L226 Difference]: Without dead ends: 345 [2020-10-14 23:21:38,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:21:38,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-14 23:21:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 257. [2020-10-14 23:21:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-14 23:21:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 319 transitions. [2020-10-14 23:21:38,600 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 319 transitions. Word has length 37 [2020-10-14 23:21:38,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:38,600 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 319 transitions. [2020-10-14 23:21:38,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:21:38,600 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 319 transitions. [2020-10-14 23:21:38,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:21:38,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:38,602 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:38,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:21:38,602 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:38,602 INFO L82 PathProgramCache]: Analyzing trace with hash -416074891, now seen corresponding path program 1 times [2020-10-14 23:21:38,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:38,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446541460] [2020-10-14 23:21:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:38,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:38,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:38,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:21:38,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:38,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 23:21:38,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:38,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:21:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:21:38,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:39,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:39,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:39,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:39,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:39,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:39,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:39,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:39,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:39,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:39,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:39,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:39,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:39,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:21:39,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446541460] [2020-10-14 23:21:39,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:39,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:21:39,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913330883] [2020-10-14 23:21:39,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:21:39,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:39,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:21:39,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:21:39,128 INFO L87 Difference]: Start difference. First operand 257 states and 319 transitions. Second operand 10 states. [2020-10-14 23:21:39,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:39,991 INFO L93 Difference]: Finished difference Result 296 states and 367 transitions. [2020-10-14 23:21:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:21:39,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-14 23:21:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:39,993 INFO L225 Difference]: With dead ends: 296 [2020-10-14 23:21:39,993 INFO L226 Difference]: Without dead ends: 239 [2020-10-14 23:21:39,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:21:39,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-14 23:21:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2020-10-14 23:21:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-14 23:21:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 294 transitions. [2020-10-14 23:21:40,014 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 294 transitions. Word has length 38 [2020-10-14 23:21:40,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:40,014 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 294 transitions. [2020-10-14 23:21:40,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:21:40,015 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 294 transitions. [2020-10-14 23:21:40,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:21:40,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:40,015 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:40,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:21:40,016 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:40,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:40,016 INFO L82 PathProgramCache]: Analyzing trace with hash 367647101, now seen corresponding path program 2 times [2020-10-14 23:21:40,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:40,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202564718] [2020-10-14 23:21:40,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:42,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:42,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:21:42,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:21:42,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1984 [2020-10-14 23:21:42,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:42,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:21:42,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:42,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:42,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:42,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:42,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:42,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:42,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:42,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:42,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:42,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202564718] [2020-10-14 23:21:42,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:42,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:42,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129545961] [2020-10-14 23:21:42,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:42,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:42,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:42,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:42,594 INFO L87 Difference]: Start difference. First operand 239 states and 294 transitions. Second operand 14 states. [2020-10-14 23:21:43,121 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-10-14 23:21:43,502 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-10-14 23:21:43,714 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2020-10-14 23:21:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:44,344 INFO L93 Difference]: Finished difference Result 344 states and 422 transitions. [2020-10-14 23:21:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:21:44,345 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-14 23:21:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:44,347 INFO L225 Difference]: With dead ends: 344 [2020-10-14 23:21:44,347 INFO L226 Difference]: Without dead ends: 333 [2020-10-14 23:21:44,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:21:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-14 23:21:44,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 252. [2020-10-14 23:21:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-14 23:21:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 309 transitions. [2020-10-14 23:21:44,374 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 309 transitions. Word has length 38 [2020-10-14 23:21:44,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:44,374 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 309 transitions. [2020-10-14 23:21:44,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 309 transitions. [2020-10-14 23:21:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:21:44,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:44,375 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:44,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:21:44,376 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:44,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:44,376 INFO L82 PathProgramCache]: Analyzing trace with hash -2140414497, now seen corresponding path program 2 times [2020-10-14 23:21:44,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:44,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831984066] [2020-10-14 23:21:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:44,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:44,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:21:44,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:44,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 23:21:44,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:44,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:21:44,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:44,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:44,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:44,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:44,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:44,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:44,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:44,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:44,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:44,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:21:44,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831984066] [2020-10-14 23:21:44,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:44,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:44,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767194572] [2020-10-14 23:21:44,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:44,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:44,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:44,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:44,935 INFO L87 Difference]: Start difference. First operand 252 states and 309 transitions. Second operand 12 states. [2020-10-14 23:21:45,696 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-14 23:21:46,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:46,396 INFO L93 Difference]: Finished difference Result 431 states and 539 transitions. [2020-10-14 23:21:46,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:21:46,397 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-14 23:21:46,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:46,398 INFO L225 Difference]: With dead ends: 431 [2020-10-14 23:21:46,398 INFO L226 Difference]: Without dead ends: 372 [2020-10-14 23:21:46,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:46,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-14 23:21:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 259. [2020-10-14 23:21:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-14 23:21:46,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 317 transitions. [2020-10-14 23:21:46,433 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 317 transitions. Word has length 39 [2020-10-14 23:21:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:46,434 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 317 transitions. [2020-10-14 23:21:46,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 317 transitions. [2020-10-14 23:21:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:21:46,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:46,435 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:46,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:21:46,435 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:46,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:46,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1133484445, now seen corresponding path program 1 times [2020-10-14 23:21:46,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:46,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472354740] [2020-10-14 23:21:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:46,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:46,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:21:46,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:46,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 23:21:46,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:46,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:21:46,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:47,148 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51 [2020-10-14 23:21:47,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:47,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:47,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:47,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:47,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:47,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:47,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:47,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472354740] [2020-10-14 23:21:47,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:47,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:47,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074415082] [2020-10-14 23:21:47,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:47,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:47,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:47,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:47,426 INFO L87 Difference]: Start difference. First operand 259 states and 317 transitions. Second operand 14 states. [2020-10-14 23:21:48,012 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2020-10-14 23:21:48,204 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2020-10-14 23:21:48,395 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-10-14 23:21:48,699 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-10-14 23:21:48,901 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2020-10-14 23:21:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:49,542 INFO L93 Difference]: Finished difference Result 398 states and 494 transitions. [2020-10-14 23:21:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:21:49,543 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-14 23:21:49,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:49,544 INFO L225 Difference]: With dead ends: 398 [2020-10-14 23:21:49,544 INFO L226 Difference]: Without dead ends: 319 [2020-10-14 23:21:49,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:21:49,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-14 23:21:49,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 263. [2020-10-14 23:21:49,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-14 23:21:49,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 322 transitions. [2020-10-14 23:21:49,571 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 322 transitions. Word has length 39 [2020-10-14 23:21:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:49,571 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 322 transitions. [2020-10-14 23:21:49,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 322 transitions. [2020-10-14 23:21:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:21:49,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:49,573 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:21:49,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:21:49,573 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:49,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:49,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2009837772, now seen corresponding path program 2 times [2020-10-14 23:21:49,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:49,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100366895] [2020-10-14 23:21:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:49,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:49,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:51,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:51,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:51,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:53,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:54,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:54,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:54,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:54,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:21:54,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-14 23:21:54,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-14 23:21:54,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:54,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:21:54,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:54,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:54,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:54,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:54,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:54,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:54,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:54,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:54,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100366895] [2020-10-14 23:21:54,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:54,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:54,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282405166] [2020-10-14 23:21:54,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:54,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:54,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:54,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:54,931 INFO L87 Difference]: Start difference. First operand 263 states and 322 transitions. Second operand 12 states. [2020-10-14 23:21:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:55,990 INFO L93 Difference]: Finished difference Result 377 states and 465 transitions. [2020-10-14 23:21:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:21:55,990 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-14 23:21:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:55,992 INFO L225 Difference]: With dead ends: 377 [2020-10-14 23:21:55,992 INFO L226 Difference]: Without dead ends: 355 [2020-10-14 23:21:55,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:21:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-14 23:21:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 306. [2020-10-14 23:21:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-14 23:21:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 374 transitions. [2020-10-14 23:21:56,024 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 374 transitions. Word has length 41 [2020-10-14 23:21:56,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:56,025 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 374 transitions. [2020-10-14 23:21:56,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:56,025 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 374 transitions. [2020-10-14 23:21:56,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:21:56,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:56,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:56,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:21:56,026 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:56,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:56,026 INFO L82 PathProgramCache]: Analyzing trace with hash -294484344, now seen corresponding path program 1 times [2020-10-14 23:21:56,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:56,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959693288] [2020-10-14 23:21:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:56,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:56,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:56,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:57,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:57,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:21:57,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-10-14 23:21:57,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:57,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:21:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:57,603 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2020-10-14 23:21:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:57,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:57,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:57,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:57,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:57,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:57,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:57,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:57,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:57,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:57,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:21:57,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959693288] [2020-10-14 23:21:57,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:57,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:57,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116829872] [2020-10-14 23:21:57,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:57,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:57,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:57,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:57,921 INFO L87 Difference]: Start difference. First operand 306 states and 374 transitions. Second operand 12 states. [2020-10-14 23:21:58,191 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2020-10-14 23:21:58,370 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 71 [2020-10-14 23:21:58,843 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2020-10-14 23:21:59,291 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 115 [2020-10-14 23:21:59,734 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2020-10-14 23:21:59,965 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2020-10-14 23:22:00,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:00,439 INFO L93 Difference]: Finished difference Result 338 states and 411 transitions. [2020-10-14 23:22:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:00,440 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-14 23:22:00,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:00,442 INFO L225 Difference]: With dead ends: 338 [2020-10-14 23:22:00,442 INFO L226 Difference]: Without dead ends: 327 [2020-10-14 23:22:00,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:22:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-14 23:22:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 308. [2020-10-14 23:22:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-14 23:22:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 376 transitions. [2020-10-14 23:22:00,477 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 376 transitions. Word has length 41 [2020-10-14 23:22:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:00,478 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 376 transitions. [2020-10-14 23:22:00,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:22:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 376 transitions. [2020-10-14 23:22:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:22:00,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:00,479 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:00,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:22:00,479 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:00,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:00,480 INFO L82 PathProgramCache]: Analyzing trace with hash 564794564, now seen corresponding path program 3 times [2020-10-14 23:22:00,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:00,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255459648] [2020-10-14 23:22:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:00,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:00,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:22:00,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:00,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-14 23:22:00,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:00,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:22:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:00,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:22:00,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:01,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:01,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:01,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:01,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:01,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:22:01,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255459648] [2020-10-14 23:22:01,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:01,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:01,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960274030] [2020-10-14 23:22:01,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:01,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:01,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:01,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:01,202 INFO L87 Difference]: Start difference. First operand 308 states and 376 transitions. Second operand 13 states. [2020-10-14 23:22:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:02,039 INFO L93 Difference]: Finished difference Result 660 states and 825 transitions. [2020-10-14 23:22:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:22:02,040 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 23:22:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:02,042 INFO L225 Difference]: With dead ends: 660 [2020-10-14 23:22:02,042 INFO L226 Difference]: Without dead ends: 517 [2020-10-14 23:22:02,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:22:02,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-10-14 23:22:02,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 443. [2020-10-14 23:22:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-10-14 23:22:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 543 transitions. [2020-10-14 23:22:02,085 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 543 transitions. Word has length 41 [2020-10-14 23:22:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:02,085 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 543 transitions. [2020-10-14 23:22:02,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 543 transitions. [2020-10-14 23:22:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:22:02,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:02,087 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:02,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:22:02,087 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:02,087 INFO L82 PathProgramCache]: Analyzing trace with hash 501787694, now seen corresponding path program 1 times [2020-10-14 23:22:02,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:02,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720628877] [2020-10-14 23:22:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:02,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:02,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:22:02,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:02,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-14 23:22:02,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:02,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:02,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:02,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:22:02,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:03,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:03,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:03,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:03,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:03,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:03,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:03,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:03,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720628877] [2020-10-14 23:22:03,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:03,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:03,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177592096] [2020-10-14 23:22:03,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:03,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:03,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:03,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:03,107 INFO L87 Difference]: Start difference. First operand 443 states and 543 transitions. Second operand 15 states. [2020-10-14 23:22:03,931 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-10-14 23:22:04,101 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2020-10-14 23:22:04,617 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-14 23:22:04,759 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-14 23:22:05,494 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-14 23:22:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:06,047 INFO L93 Difference]: Finished difference Result 734 states and 909 transitions. [2020-10-14 23:22:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:06,053 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-14 23:22:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:06,057 INFO L225 Difference]: With dead ends: 734 [2020-10-14 23:22:06,059 INFO L226 Difference]: Without dead ends: 631 [2020-10-14 23:22:06,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:22:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-14 23:22:06,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 519. [2020-10-14 23:22:06,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2020-10-14 23:22:06,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 640 transitions. [2020-10-14 23:22:06,123 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 640 transitions. Word has length 42 [2020-10-14 23:22:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:06,123 INFO L479 AbstractCegarLoop]: Abstraction has 519 states and 640 transitions. [2020-10-14 23:22:06,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 640 transitions. [2020-10-14 23:22:06,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:22:06,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:06,125 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:06,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:22:06,125 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:06,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:06,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1450469490, now seen corresponding path program 2 times [2020-10-14 23:22:06,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:06,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513576848] [2020-10-14 23:22:06,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:06,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:07,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:07,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:22:07,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-10-14 23:22:07,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:07,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:22:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:07,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:07,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:07,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:07,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:07,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:07,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:07,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:07,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:07,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:22:07,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513576848] [2020-10-14 23:22:07,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:07,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:22:07,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827548881] [2020-10-14 23:22:07,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:22:07,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:07,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:22:07,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:07,490 INFO L87 Difference]: Start difference. First operand 519 states and 640 transitions. Second operand 14 states. [2020-10-14 23:22:08,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:08,998 INFO L93 Difference]: Finished difference Result 792 states and 989 transitions. [2020-10-14 23:22:08,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:22:08,999 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-14 23:22:08,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:09,002 INFO L225 Difference]: With dead ends: 792 [2020-10-14 23:22:09,002 INFO L226 Difference]: Without dead ends: 709 [2020-10-14 23:22:09,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:22:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-14 23:22:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 469. [2020-10-14 23:22:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-10-14 23:22:09,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 577 transitions. [2020-10-14 23:22:09,047 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 577 transitions. Word has length 42 [2020-10-14 23:22:09,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:09,048 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 577 transitions. [2020-10-14 23:22:09,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:22:09,048 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 577 transitions. [2020-10-14 23:22:09,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:22:09,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:09,049 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:09,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:22:09,050 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:09,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:09,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1644184355, now seen corresponding path program 2 times [2020-10-14 23:22:09,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:09,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914944165] [2020-10-14 23:22:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:09,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:10,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:10,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:22:10,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1619 [2020-10-14 23:22:10,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:10,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:22:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:22:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:10,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:10,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:10,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:10,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:10,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:10,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:10,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:10,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:10,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914944165] [2020-10-14 23:22:10,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:10,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:22:10,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319364451] [2020-10-14 23:22:10,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:22:10,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:10,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:22:10,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:22:10,801 INFO L87 Difference]: Start difference. First operand 469 states and 577 transitions. Second operand 11 states. [2020-10-14 23:22:11,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:11,477 INFO L93 Difference]: Finished difference Result 996 states and 1246 transitions. [2020-10-14 23:22:11,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:22:11,481 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-14 23:22:11,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:11,484 INFO L225 Difference]: With dead ends: 996 [2020-10-14 23:22:11,484 INFO L226 Difference]: Without dead ends: 666 [2020-10-14 23:22:11,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2020-10-14 23:22:11,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 495. [2020-10-14 23:22:11,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-10-14 23:22:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 617 transitions. [2020-10-14 23:22:11,524 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 617 transitions. Word has length 42 [2020-10-14 23:22:11,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:11,524 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 617 transitions. [2020-10-14 23:22:11,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:22:11,525 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 617 transitions. [2020-10-14 23:22:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:22:11,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:11,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:11,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:22:11,526 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:11,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:11,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1167796655, now seen corresponding path program 2 times [2020-10-14 23:22:11,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:11,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314170256] [2020-10-14 23:22:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:11,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:12,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:13,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:13,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:22:13,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1742 [2020-10-14 23:22:13,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:13,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:22:13,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:13,619 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-14 23:22:13,739 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-14 23:22:14,245 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 101 [2020-10-14 23:22:14,411 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-14 23:22:14,596 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-14 23:22:14,901 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-10-14 23:22:15,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:15,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:15,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:15,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:15,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:15,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:15,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:15,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:22:15,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314170256] [2020-10-14 23:22:15,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:15,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:15,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266999878] [2020-10-14 23:22:15,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:15,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:15,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:15,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:15,329 INFO L87 Difference]: Start difference. First operand 495 states and 617 transitions. Second operand 16 states. [2020-10-14 23:22:15,946 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 107 [2020-10-14 23:22:16,213 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2020-10-14 23:22:16,386 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-14 23:22:16,588 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-14 23:22:17,441 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 162 [2020-10-14 23:22:18,046 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 142 [2020-10-14 23:22:18,527 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 105 [2020-10-14 23:22:18,920 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 109 [2020-10-14 23:22:19,321 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 89 [2020-10-14 23:22:19,812 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 138 [2020-10-14 23:22:20,415 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 126 [2020-10-14 23:22:20,946 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2020-10-14 23:22:21,795 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 150 [2020-10-14 23:22:22,568 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 117 [2020-10-14 23:22:22,861 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2020-10-14 23:22:23,164 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 87 [2020-10-14 23:22:23,392 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-14 23:22:23,590 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-14 23:22:23,834 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2020-10-14 23:22:24,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:24,350 INFO L93 Difference]: Finished difference Result 523 states and 647 transitions. [2020-10-14 23:22:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:22:24,351 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-14 23:22:24,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:24,353 INFO L225 Difference]: With dead ends: 523 [2020-10-14 23:22:24,354 INFO L226 Difference]: Without dead ends: 521 [2020-10-14 23:22:24,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=223, Invalid=1259, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:22:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-10-14 23:22:24,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 509. [2020-10-14 23:22:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-14 23:22:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 632 transitions. [2020-10-14 23:22:24,398 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 632 transitions. Word has length 43 [2020-10-14 23:22:24,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:24,398 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 632 transitions. [2020-10-14 23:22:24,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 632 transitions. [2020-10-14 23:22:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:22:24,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:24,399 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:24,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:22:24,400 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:24,400 INFO L82 PathProgramCache]: Analyzing trace with hash -277246553, now seen corresponding path program 2 times [2020-10-14 23:22:24,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:24,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698119321] [2020-10-14 23:22:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:24,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:24,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:22:24,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:24,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-14 23:22:24,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:24,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:22:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:25,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:25,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:25,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:25,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:25,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:25,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:25,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:25,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:25,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:25,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:25,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:22:25,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698119321] [2020-10-14 23:22:25,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:25,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:22:25,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208050541] [2020-10-14 23:22:25,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:22:25,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:25,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:22:25,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:25,248 INFO L87 Difference]: Start difference. First operand 509 states and 632 transitions. Second operand 14 states. [2020-10-14 23:22:26,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:26,506 INFO L93 Difference]: Finished difference Result 836 states and 1050 transitions. [2020-10-14 23:22:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:22:26,507 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-14 23:22:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:26,510 INFO L225 Difference]: With dead ends: 836 [2020-10-14 23:22:26,510 INFO L226 Difference]: Without dead ends: 682 [2020-10-14 23:22:26,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:22:26,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-10-14 23:22:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 566. [2020-10-14 23:22:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-10-14 23:22:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 706 transitions. [2020-10-14 23:22:26,563 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 706 transitions. Word has length 43 [2020-10-14 23:22:26,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:26,563 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 706 transitions. [2020-10-14 23:22:26,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:22:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 706 transitions. [2020-10-14 23:22:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:22:26,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:26,565 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:26,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:22:26,565 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:26,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:26,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1189385197, now seen corresponding path program 3 times [2020-10-14 23:22:26,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:26,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236353324] [2020-10-14 23:22:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:26,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:27,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:27,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:22:27,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:27,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-14 23:22:27,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:27,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:27,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:27,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:27,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:22:27,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:27,644 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-14 23:22:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:27,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:27,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:27,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:27,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:27,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:27,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:22:27,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236353324] [2020-10-14 23:22:27,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:27,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:27,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407818285] [2020-10-14 23:22:27,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:27,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:27,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:27,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:27,958 INFO L87 Difference]: Start difference. First operand 566 states and 706 transitions. Second operand 15 states. [2020-10-14 23:22:28,640 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2020-10-14 23:22:28,915 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 50 [2020-10-14 23:22:29,300 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-10-14 23:22:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:30,071 INFO L93 Difference]: Finished difference Result 1007 states and 1267 transitions. [2020-10-14 23:22:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:22:30,072 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 23:22:30,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:30,074 INFO L225 Difference]: With dead ends: 1007 [2020-10-14 23:22:30,075 INFO L226 Difference]: Without dead ends: 797 [2020-10-14 23:22:30,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:22:30,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-10-14 23:22:30,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 613. [2020-10-14 23:22:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-10-14 23:22:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 765 transitions. [2020-10-14 23:22:30,129 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 765 transitions. Word has length 44 [2020-10-14 23:22:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:30,129 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 765 transitions. [2020-10-14 23:22:30,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:30,129 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 765 transitions. [2020-10-14 23:22:30,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:22:30,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:30,131 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:30,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:22:30,131 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:30,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:30,131 INFO L82 PathProgramCache]: Analyzing trace with hash 168316843, now seen corresponding path program 1 times [2020-10-14 23:22:30,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:30,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143255689] [2020-10-14 23:22:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:30,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:30,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:22:30,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:30,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-14 23:22:30,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:30,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:30,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:30,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:30,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:22:30,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:31,219 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 57 [2020-10-14 23:22:31,452 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-10-14 23:22:31,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:31,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:31,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:31,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:31,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:31,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:31,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:31,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:31,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143255689] [2020-10-14 23:22:31,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:31,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:31,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923415311] [2020-10-14 23:22:31,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:31,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:31,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:31,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:31,873 INFO L87 Difference]: Start difference. First operand 613 states and 765 transitions. Second operand 15 states. [2020-10-14 23:22:32,256 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-10-14 23:22:32,434 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2020-10-14 23:22:32,667 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2020-10-14 23:22:32,797 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-10-14 23:22:32,952 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-14 23:22:33,142 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-14 23:22:33,284 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-10-14 23:22:33,555 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2020-10-14 23:22:35,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:35,378 INFO L93 Difference]: Finished difference Result 1213 states and 1534 transitions. [2020-10-14 23:22:35,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:22:35,378 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 23:22:35,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:35,382 INFO L225 Difference]: With dead ends: 1213 [2020-10-14 23:22:35,382 INFO L226 Difference]: Without dead ends: 1038 [2020-10-14 23:22:35,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:22:35,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-14 23:22:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 742. [2020-10-14 23:22:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-10-14 23:22:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 936 transitions. [2020-10-14 23:22:35,437 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 936 transitions. Word has length 44 [2020-10-14 23:22:35,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:35,437 INFO L479 AbstractCegarLoop]: Abstraction has 742 states and 936 transitions. [2020-10-14 23:22:35,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 936 transitions. [2020-10-14 23:22:35,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:22:35,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:35,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:35,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:22:35,439 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:35,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:35,440 INFO L82 PathProgramCache]: Analyzing trace with hash 24597676, now seen corresponding path program 1 times [2020-10-14 23:22:35,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:35,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350214686] [2020-10-14 23:22:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:35,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:35,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:36,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:37,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:37,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 23:22:37,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2289 [2020-10-14 23:22:37,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:37,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:22:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:38,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:38,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:38,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:38,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:38,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:38,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:38,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:38,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:22:38,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350214686] [2020-10-14 23:22:38,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:38,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:38,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979163114] [2020-10-14 23:22:38,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:38,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:38,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:38,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:38,163 INFO L87 Difference]: Start difference. First operand 742 states and 936 transitions. Second operand 13 states. [2020-10-14 23:22:39,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:39,043 INFO L93 Difference]: Finished difference Result 834 states and 1051 transitions. [2020-10-14 23:22:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:22:39,044 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-14 23:22:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:39,047 INFO L225 Difference]: With dead ends: 834 [2020-10-14 23:22:39,047 INFO L226 Difference]: Without dead ends: 832 [2020-10-14 23:22:39,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:22:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-14 23:22:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 754. [2020-10-14 23:22:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2020-10-14 23:22:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 950 transitions. [2020-10-14 23:22:39,097 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 950 transitions. Word has length 45 [2020-10-14 23:22:39,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:39,097 INFO L479 AbstractCegarLoop]: Abstraction has 754 states and 950 transitions. [2020-10-14 23:22:39,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 950 transitions. [2020-10-14 23:22:39,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:22:39,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:39,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:39,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:22:39,099 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:39,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:39,099 INFO L82 PathProgramCache]: Analyzing trace with hash -600872852, now seen corresponding path program 2 times [2020-10-14 23:22:39,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:39,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052497540] [2020-10-14 23:22:39,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:39,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:39,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:39,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 23:22:39,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:39,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-14 23:22:39,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:39,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:22:39,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:40,124 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-10-14 23:22:40,252 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-10-14 23:22:40,558 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-14 23:22:40,853 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2020-10-14 23:22:40,985 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-10-14 23:22:41,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:41,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:41,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:41,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:41,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:41,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:41,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:41,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:41,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052497540] [2020-10-14 23:22:41,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:41,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:41,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988220319] [2020-10-14 23:22:41,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:41,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:41,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:41,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:41,295 INFO L87 Difference]: Start difference. First operand 754 states and 950 transitions. Second operand 16 states. [2020-10-14 23:22:41,831 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2020-10-14 23:22:42,006 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2020-10-14 23:22:42,448 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2020-10-14 23:22:42,594 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2020-10-14 23:22:42,994 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-14 23:22:43,240 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-14 23:22:43,472 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-14 23:22:44,105 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2020-10-14 23:22:44,877 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-14 23:22:45,706 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-14 23:22:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:46,034 INFO L93 Difference]: Finished difference Result 1009 states and 1262 transitions. [2020-10-14 23:22:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:22:46,034 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-14 23:22:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:46,038 INFO L225 Difference]: With dead ends: 1009 [2020-10-14 23:22:46,039 INFO L226 Difference]: Without dead ends: 1007 [2020-10-14 23:22:46,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=277, Invalid=1129, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:22:46,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-14 23:22:46,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 807. [2020-10-14 23:22:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-10-14 23:22:46,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1017 transitions. [2020-10-14 23:22:46,110 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1017 transitions. Word has length 45 [2020-10-14 23:22:46,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:46,110 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1017 transitions. [2020-10-14 23:22:46,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:46,110 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1017 transitions. [2020-10-14 23:22:46,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:22:46,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:46,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:46,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:22:46,112 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:46,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash -382018134, now seen corresponding path program 1 times [2020-10-14 23:22:46,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:46,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928884438] [2020-10-14 23:22:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:47,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:48,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:48,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 23:22:48,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2560 [2020-10-14 23:22:48,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:48,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:22:48,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:49,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:49,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:49,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:49,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:49,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:49,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:49,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:49,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:49,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928884438] [2020-10-14 23:22:49,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:49,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:49,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824324341] [2020-10-14 23:22:49,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:49,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:49,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:49,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:49,694 INFO L87 Difference]: Start difference. First operand 807 states and 1017 transitions. Second operand 16 states. [2020-10-14 23:22:50,083 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2020-10-14 23:22:50,249 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-14 23:22:50,675 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2020-10-14 23:22:51,228 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-14 23:22:51,484 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-10-14 23:22:51,885 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2020-10-14 23:22:52,149 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-14 23:22:52,351 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-14 23:22:52,863 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-14 23:22:53,086 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-14 23:22:53,266 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-14 23:22:53,738 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-10-14 23:22:54,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:54,167 INFO L93 Difference]: Finished difference Result 1086 states and 1359 transitions. [2020-10-14 23:22:54,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:22:54,168 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-14 23:22:54,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:54,171 INFO L225 Difference]: With dead ends: 1086 [2020-10-14 23:22:54,171 INFO L226 Difference]: Without dead ends: 1084 [2020-10-14 23:22:54,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:22:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-10-14 23:22:54,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 843. [2020-10-14 23:22:54,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-10-14 23:22:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1067 transitions. [2020-10-14 23:22:54,238 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1067 transitions. Word has length 45 [2020-10-14 23:22:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:54,238 INFO L479 AbstractCegarLoop]: Abstraction has 843 states and 1067 transitions. [2020-10-14 23:22:54,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1067 transitions. [2020-10-14 23:22:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:22:54,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:54,240 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:22:54,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:22:54,240 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:54,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:54,240 INFO L82 PathProgramCache]: Analyzing trace with hash 683042732, now seen corresponding path program 1 times [2020-10-14 23:22:54,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:54,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005020189] [2020-10-14 23:22:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:54,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:54,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:55,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:55,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 23:22:55,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:55,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-10-14 23:22:55,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:55,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:22:55,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:55,694 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-10-14 23:22:55,997 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 45 [2020-10-14 23:22:56,167 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-10-14 23:22:56,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:56,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:56,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:56,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:56,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:56,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:56,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005020189] [2020-10-14 23:22:56,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:56,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:56,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601377891] [2020-10-14 23:22:56,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:56,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:56,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:56,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:56,541 INFO L87 Difference]: Start difference. First operand 843 states and 1067 transitions. Second operand 16 states. [2020-10-14 23:22:56,950 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2020-10-14 23:22:57,107 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2020-10-14 23:22:57,475 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2020-10-14 23:22:57,602 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2020-10-14 23:22:57,837 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-10-14 23:22:58,011 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-14 23:22:58,892 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2020-10-14 23:22:59,367 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2020-10-14 23:22:59,752 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-14 23:23:00,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:00,031 INFO L93 Difference]: Finished difference Result 960 states and 1206 transitions. [2020-10-14 23:23:00,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:23:00,032 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-14 23:23:00,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:00,035 INFO L225 Difference]: With dead ends: 960 [2020-10-14 23:23:00,035 INFO L226 Difference]: Without dead ends: 958 [2020-10-14 23:23:00,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:23:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-10-14 23:23:00,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 867. [2020-10-14 23:23:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-14 23:23:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1095 transitions. [2020-10-14 23:23:00,135 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1095 transitions. Word has length 45 [2020-10-14 23:23:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:00,137 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1095 transitions. [2020-10-14 23:23:00,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:23:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1095 transitions. [2020-10-14 23:23:00,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:23:00,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:00,139 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:00,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:23:00,139 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:00,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:00,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1008411710, now seen corresponding path program 1 times [2020-10-14 23:23:00,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:00,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340035783] [2020-10-14 23:23:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:00,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:00,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:01,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:01,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:23:01,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:23:01,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1248 [2020-10-14 23:23:01,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:01,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:23:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:23:01,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:01,819 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-14 23:23:02,024 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-10-14 23:23:02,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:02,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:02,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:02,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:02,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:02,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:02,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340035783] [2020-10-14 23:23:02,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:02,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:23:02,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617291416] [2020-10-14 23:23:02,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:23:02,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:02,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:23:02,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:23:02,604 INFO L87 Difference]: Start difference. First operand 867 states and 1095 transitions. Second operand 15 states. [2020-10-14 23:23:02,884 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-14 23:23:03,055 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-10-14 23:23:03,549 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-14 23:23:03,793 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2020-10-14 23:23:03,988 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2020-10-14 23:23:04,244 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-14 23:23:05,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:05,248 INFO L93 Difference]: Finished difference Result 1047 states and 1316 transitions. [2020-10-14 23:23:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:23:05,249 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-10-14 23:23:05,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:05,253 INFO L225 Difference]: With dead ends: 1047 [2020-10-14 23:23:05,253 INFO L226 Difference]: Without dead ends: 1008 [2020-10-14 23:23:05,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=230, Invalid=640, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:23:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-10-14 23:23:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 928. [2020-10-14 23:23:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2020-10-14 23:23:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1170 transitions. [2020-10-14 23:23:05,334 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1170 transitions. Word has length 46 [2020-10-14 23:23:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:05,334 INFO L479 AbstractCegarLoop]: Abstraction has 928 states and 1170 transitions. [2020-10-14 23:23:05,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:23:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1170 transitions. [2020-10-14 23:23:05,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:23:05,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:05,336 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:05,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:23:05,336 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:05,336 INFO L82 PathProgramCache]: Analyzing trace with hash 275503874, now seen corresponding path program 1 times [2020-10-14 23:23:05,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:05,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894240150] [2020-10-14 23:23:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:05,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:05,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:07,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:07,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:23:07,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:23:07,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1743 [2020-10-14 23:23:07,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:07,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:23:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:23:07,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:07,430 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-10-14 23:23:07,571 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2020-10-14 23:23:07,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:07,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:07,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:07,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:07,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:07,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:07,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894240150] [2020-10-14 23:23:07,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:07,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:23:07,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548492838] [2020-10-14 23:23:07,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:23:07,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:07,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:23:07,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:23:07,979 INFO L87 Difference]: Start difference. First operand 928 states and 1170 transitions. Second operand 16 states. [2020-10-14 23:23:08,260 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2020-10-14 23:23:09,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:09,806 INFO L93 Difference]: Finished difference Result 1215 states and 1532 transitions. [2020-10-14 23:23:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:23:09,807 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-14 23:23:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:09,810 INFO L225 Difference]: With dead ends: 1215 [2020-10-14 23:23:09,810 INFO L226 Difference]: Without dead ends: 999 [2020-10-14 23:23:09,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:23:09,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-10-14 23:23:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 939. [2020-10-14 23:23:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2020-10-14 23:23:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1183 transitions. [2020-10-14 23:23:09,890 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1183 transitions. Word has length 46 [2020-10-14 23:23:09,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:09,890 INFO L479 AbstractCegarLoop]: Abstraction has 939 states and 1183 transitions. [2020-10-14 23:23:09,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:23:09,890 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1183 transitions. [2020-10-14 23:23:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:23:09,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:09,891 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:09,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:23:09,891 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:09,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:09,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1270204373, now seen corresponding path program 2 times [2020-10-14 23:23:09,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:09,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939423400] [2020-10-14 23:23:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:09,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:10,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:11,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:11,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:23:11,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:23:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1420 [2020-10-14 23:23:11,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:11,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:23:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:23:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:11,541 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-10-14 23:23:11,741 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 51 [2020-10-14 23:23:11,884 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2020-10-14 23:23:12,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:12,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:12,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:12,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:12,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:12,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:12,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:12,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:23:12,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939423400] [2020-10-14 23:23:12,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:12,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:23:12,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738465971] [2020-10-14 23:23:12,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:23:12,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:12,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:23:12,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:23:12,530 INFO L87 Difference]: Start difference. First operand 939 states and 1183 transitions. Second operand 14 states. [2020-10-14 23:23:12,915 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-14 23:23:13,132 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-14 23:23:13,487 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2020-10-14 23:23:13,741 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-10-14 23:23:14,068 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-14 23:23:14,790 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-14 23:23:15,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:15,403 INFO L93 Difference]: Finished difference Result 968 states and 1214 transitions. [2020-10-14 23:23:15,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:23:15,404 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-14 23:23:15,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:15,408 INFO L225 Difference]: With dead ends: 968 [2020-10-14 23:23:15,409 INFO L226 Difference]: Without dead ends: 957 [2020-10-14 23:23:15,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:23:15,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-10-14 23:23:15,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 939. [2020-10-14 23:23:15,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2020-10-14 23:23:15,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1183 transitions. [2020-10-14 23:23:15,475 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1183 transitions. Word has length 46 [2020-10-14 23:23:15,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:15,476 INFO L479 AbstractCegarLoop]: Abstraction has 939 states and 1183 transitions. [2020-10-14 23:23:15,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:23:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1183 transitions. [2020-10-14 23:23:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:23:15,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:15,477 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:15,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:23:15,477 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:15,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:15,478 INFO L82 PathProgramCache]: Analyzing trace with hash -348880188, now seen corresponding path program 1 times [2020-10-14 23:23:15,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:15,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811026466] [2020-10-14 23:23:15,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:17,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:17,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:23:17,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:23:17,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1511 [2020-10-14 23:23:17,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:17,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:23:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:23:17,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:17,408 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2020-10-14 23:23:17,666 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2020-10-14 23:23:17,879 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 22 [2020-10-14 23:23:18,031 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 25 [2020-10-14 23:23:18,171 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-10-14 23:23:18,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:18,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:18,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:18,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:18,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:18,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:18,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:18,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:18,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:18,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811026466] [2020-10-14 23:23:18,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:18,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:23:18,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974362300] [2020-10-14 23:23:18,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:23:18,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:18,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:23:18,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:23:18,343 INFO L87 Difference]: Start difference. First operand 939 states and 1183 transitions. Second operand 15 states. [2020-10-14 23:23:18,591 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-10-14 23:23:19,379 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2020-10-14 23:23:19,545 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-10-14 23:23:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:21,270 INFO L93 Difference]: Finished difference Result 1174 states and 1470 transitions. [2020-10-14 23:23:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:23:21,270 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-10-14 23:23:21,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:21,274 INFO L225 Difference]: With dead ends: 1174 [2020-10-14 23:23:21,274 INFO L226 Difference]: Without dead ends: 1122 [2020-10-14 23:23:21,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:23:21,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2020-10-14 23:23:21,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 990. [2020-10-14 23:23:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-10-14 23:23:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1245 transitions. [2020-10-14 23:23:21,360 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1245 transitions. Word has length 46 [2020-10-14 23:23:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:21,360 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1245 transitions. [2020-10-14 23:23:21,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:23:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1245 transitions. [2020-10-14 23:23:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:23:21,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:21,362 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:21,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:23:21,362 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:21,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:21,362 INFO L82 PathProgramCache]: Analyzing trace with hash 935035396, now seen corresponding path program 1 times [2020-10-14 23:23:21,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:21,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850908344] [2020-10-14 23:23:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:21,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:21,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:22,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:22,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:23,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:23,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:23:23,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:23:23,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-14 23:23:23,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:23,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:23:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:23,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:23:23,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:23,429 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-14 23:23:23,570 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-10-14 23:23:23,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:23,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:23,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:23,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:23,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:23,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:23,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:23,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:23,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:23,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850908344] [2020-10-14 23:23:23,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:23,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:23:23,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834241386] [2020-10-14 23:23:23,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:23:23,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:23,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:23:23,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:23:23,987 INFO L87 Difference]: Start difference. First operand 990 states and 1245 transitions. Second operand 16 states. [2020-10-14 23:23:24,252 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-10-14 23:23:25,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:25,923 INFO L93 Difference]: Finished difference Result 1356 states and 1702 transitions. [2020-10-14 23:23:25,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:23:25,923 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-14 23:23:25,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:25,927 INFO L225 Difference]: With dead ends: 1356 [2020-10-14 23:23:25,927 INFO L226 Difference]: Without dead ends: 1140 [2020-10-14 23:23:25,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:23:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2020-10-14 23:23:26,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1013. [2020-10-14 23:23:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-10-14 23:23:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1269 transitions. [2020-10-14 23:23:26,010 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1269 transitions. Word has length 46 [2020-10-14 23:23:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:26,010 INFO L479 AbstractCegarLoop]: Abstraction has 1013 states and 1269 transitions. [2020-10-14 23:23:26,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:23:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1269 transitions. [2020-10-14 23:23:26,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:23:26,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:26,012 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:26,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:23:26,012 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:26,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1174709246, now seen corresponding path program 2 times [2020-10-14 23:23:26,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:26,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979070556] [2020-10-14 23:23:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:26,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:26,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:28,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:28,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:23:28,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:23:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2933 [2020-10-14 23:23:28,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:28,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:23:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:23:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:28,998 ERROR L253 erpolLogProxyWrapper]: Interpolant 37 not inductive [2020-10-14 23:23:29,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:23:29,001 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-14 23:23:29,008 INFO L168 Benchmark]: Toolchain (without parser) took 165474.16 ms. Allocated memory was 146.8 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 101.4 MB in the beginning and 490.1 MB in the end (delta: -388.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-14 23:23:29,009 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:23:29,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.72 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 169.6 MB in the end (delta: -68.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:23:29,010 INFO L168 Benchmark]: Boogie Preprocessor took 72.45 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 165.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:23:29,010 INFO L168 Benchmark]: RCFGBuilder took 740.45 ms. Allocated memory is still 203.4 MB. Free memory was 165.7 MB in the beginning and 111.1 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:23:29,010 INFO L168 Benchmark]: TraceAbstraction took 164018.32 ms. Allocated memory was 203.4 MB in the beginning and 1.2 GB in the end (delta: 991.4 MB). Free memory was 111.1 MB in the beginning and 490.1 MB in the end (delta: -379.0 MB). Peak memory consumption was 991.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:23:29,012 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.72 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 169.6 MB in the end (delta: -68.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.45 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 165.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 740.45 ms. Allocated memory is still 203.4 MB. Free memory was 165.7 MB in the beginning and 111.1 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 164018.32 ms. Allocated memory was 203.4 MB in the beginning and 1.2 GB in the end (delta: 991.4 MB). Free memory was 111.1 MB in the beginning and 490.1 MB in the end (delta: -379.0 MB). Peak memory consumption was 991.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...