/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.13.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:04:31,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:04:31,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:04:31,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:04:31,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:04:31,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:04:31,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:04:31,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:04:31,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:04:31,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:04:31,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:04:31,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:04:31,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:04:31,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:04:31,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:04:31,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:04:31,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:04:31,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:04:31,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:04:31,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:04:31,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:04:31,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:04:31,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:04:31,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:04:31,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:04:31,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:04:31,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:04:31,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:04:31,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:04:31,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:04:31,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:04:31,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:04:31,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:04:31,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:04:31,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:04:31,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:04:31,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:04:31,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:04:31,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:04:31,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:04:31,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:04:31,274 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 10:04:31,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:04:31,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:04:31,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:04:31,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:04:31,319 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:04:31,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:04:31,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:04:31,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:04:31,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:04:31,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:04:31,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:04:31,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:04:31,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:04:31,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:04:31,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:04:31,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:04:31,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:04:31,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:04:31,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:04:31,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:04:31,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:04:31,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:04:31,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:04:31,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:04:31,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:04:31,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:04:31,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:04:31,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:04:31,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:04:31,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:04:31,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:04:31,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:04:31,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:04:31,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:04:31,641 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:04:31,642 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.13.i.cil-2.c [2020-10-14 10:04:31,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4c64c8f7/82f0f08c4f4a42499bd612d445bc96db/FLAG2ec68e8ff [2020-10-14 10:04:32,333 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:04:32,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.13.i.cil-2.c [2020-10-14 10:04:32,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4c64c8f7/82f0f08c4f4a42499bd612d445bc96db/FLAG2ec68e8ff [2020-10-14 10:04:32,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4c64c8f7/82f0f08c4f4a42499bd612d445bc96db [2020-10-14 10:04:32,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:04:32,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:04:32,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:04:32,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:04:32,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:04:32,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:32" (1/1) ... [2020-10-14 10:04:32,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b75509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:32, skipping insertion in model container [2020-10-14 10:04:32,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:32" (1/1) ... [2020-10-14 10:04:32,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:04:32,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:04:33,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:04:33,232 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:04:33,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:04:33,405 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:04:33,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:33 WrapperNode [2020-10-14 10:04:33,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:04:33,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:04:33,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:04:33,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:04:33,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:33" (1/1) ... [2020-10-14 10:04:33,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:33" (1/1) ... [2020-10-14 10:04:33,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:33" (1/1) ... [2020-10-14 10:04:33,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:33" (1/1) ... [2020-10-14 10:04:33,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:33" (1/1) ... [2020-10-14 10:04:33,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:33" (1/1) ... [2020-10-14 10:04:33,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:33" (1/1) ... [2020-10-14 10:04:33,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:04:33,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:04:33,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:04:33,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:04:33,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:33" (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 10:04:33,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:04:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:04:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:04:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:04:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:04:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:04:33,629 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:04:33,629 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:04:33,629 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:04:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:04:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:04:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:04:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:04:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:04:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:04:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:04:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:04:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:04:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:04:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:04:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:04:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:04:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:04:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:04:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:04:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:04:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:04:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:04:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:04:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:04:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:04:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:04:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:04:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:04:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:04:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:04:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:04:34,106 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:04:34,773 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:04:34,773 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:04:34,798 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:04:34,798 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:04:34,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:34 BoogieIcfgContainer [2020-10-14 10:04:34,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:04:34,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:04:34,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:04:34,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:04:34,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:04:32" (1/3) ... [2020-10-14 10:04:34,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30262273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:34, skipping insertion in model container [2020-10-14 10:04:34,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:33" (2/3) ... [2020-10-14 10:04:34,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30262273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:34, skipping insertion in model container [2020-10-14 10:04:34,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:34" (3/3) ... [2020-10-14 10:04:34,813 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.13.i.cil-2.c [2020-10-14 10:04:34,825 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:04:34,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:04:34,849 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:04:34,876 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:04:34,876 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:04:34,876 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:04:34,876 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:04:34,877 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:04:34,877 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:04:34,877 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:04:34,877 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:04:34,901 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-14 10:04:34,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 10:04:34,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:34,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:34,912 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:34,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:34,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1765903298, now seen corresponding path program 1 times [2020-10-14 10:04:34,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:34,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624782377] [2020-10-14 10:04:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:35,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:35,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:36,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:36,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:36,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 10:04:36,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:36,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1427 [2020-10-14 10:04:36,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:36,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:04:36,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:36,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:36,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:36,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:36,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:36,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:36,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:36,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:36,732 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 10:04:36,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624782377] [2020-10-14 10:04:36,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:36,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:36,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964715932] [2020-10-14 10:04:36,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:36,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:36,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:36,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:36,761 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2020-10-14 10:04:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:37,487 INFO L93 Difference]: Finished difference Result 436 states and 738 transitions. [2020-10-14 10:04:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:37,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 10:04:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:37,504 INFO L225 Difference]: With dead ends: 436 [2020-10-14 10:04:37,505 INFO L226 Difference]: Without dead ends: 266 [2020-10-14 10:04:37,509 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 10:04:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-14 10:04:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-14 10:04:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-14 10:04:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 399 transitions. [2020-10-14 10:04:37,580 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 399 transitions. Word has length 41 [2020-10-14 10:04:37,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:37,581 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 399 transitions. [2020-10-14 10:04:37,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 399 transitions. [2020-10-14 10:04:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 10:04:37,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:37,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:37,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:04:37,586 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:37,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:37,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1238454678, now seen corresponding path program 1 times [2020-10-14 10:04:37,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:37,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897273498] [2020-10-14 10:04:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:37,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:38,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:38,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 10:04:38,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:38,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-14 10:04:38,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:38,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:04:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:04:38,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:38,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:38,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:38,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:38,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:38,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:04:38,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:38,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:38,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:38,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:38,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897273498] [2020-10-14 10:04:38,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:38,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:38,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653519536] [2020-10-14 10:04:38,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:38,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:38,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:38,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:38,982 INFO L87 Difference]: Start difference. First operand 266 states and 399 transitions. Second operand 4 states. [2020-10-14 10:04:39,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:39,614 INFO L93 Difference]: Finished difference Result 518 states and 790 transitions. [2020-10-14 10:04:39,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:39,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 10:04:39,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:39,621 INFO L225 Difference]: With dead ends: 518 [2020-10-14 10:04:39,621 INFO L226 Difference]: Without dead ends: 391 [2020-10-14 10:04:39,623 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 10:04:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-14 10:04:39,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-10-14 10:04:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 10:04:39,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 586 transitions. [2020-10-14 10:04:39,684 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 586 transitions. Word has length 58 [2020-10-14 10:04:39,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:39,685 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 586 transitions. [2020-10-14 10:04:39,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:39,685 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 586 transitions. [2020-10-14 10:04:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 10:04:39,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:39,692 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:39,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:04:39,692 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:39,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:39,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1101054784, now seen corresponding path program 1 times [2020-10-14 10:04:39,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:39,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126957911] [2020-10-14 10:04:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:39,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:40,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:40,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 10:04:40,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-14 10:04:40,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:40,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:04:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:04:40,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:40,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:40,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:40,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:40,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:40,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:40,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:04:40,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:40,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:40,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:04:40,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126957911] [2020-10-14 10:04:40,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:40,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:40,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125276012] [2020-10-14 10:04:40,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:40,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:40,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:40,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:40,500 INFO L87 Difference]: Start difference. First operand 391 states and 586 transitions. Second operand 4 states. [2020-10-14 10:04:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:41,059 INFO L93 Difference]: Finished difference Result 768 states and 1164 transitions. [2020-10-14 10:04:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:41,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 10:04:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:41,064 INFO L225 Difference]: With dead ends: 768 [2020-10-14 10:04:41,064 INFO L226 Difference]: Without dead ends: 516 [2020-10-14 10:04:41,066 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 10:04:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-14 10:04:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2020-10-14 10:04:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-14 10:04:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 775 transitions. [2020-10-14 10:04:41,090 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 775 transitions. Word has length 80 [2020-10-14 10:04:41,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:41,091 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 775 transitions. [2020-10-14 10:04:41,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 775 transitions. [2020-10-14 10:04:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 10:04:41,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:41,096 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:41,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:04:41,096 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:41,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:41,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1488005106, now seen corresponding path program 1 times [2020-10-14 10:04:41,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:41,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525842542] [2020-10-14 10:04:41,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:42,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:45,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:45,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:04:45,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3865 [2020-10-14 10:04:45,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:45,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:04:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:45,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:45,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:45,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:45,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:45,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:45,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:04:45,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:45,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:45,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:45,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525842542] [2020-10-14 10:04:45,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:45,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:45,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766163686] [2020-10-14 10:04:45,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:45,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:45,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:45,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:45,181 INFO L87 Difference]: Start difference. First operand 516 states and 775 transitions. Second operand 4 states. [2020-10-14 10:04:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:45,665 INFO L93 Difference]: Finished difference Result 1020 states and 1543 transitions. [2020-10-14 10:04:45,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:45,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 10:04:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:45,670 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 10:04:45,670 INFO L226 Difference]: Without dead ends: 643 [2020-10-14 10:04:45,671 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 10:04:45,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-14 10:04:45,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2020-10-14 10:04:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-14 10:04:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 968 transitions. [2020-10-14 10:04:45,691 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 968 transitions. Word has length 104 [2020-10-14 10:04:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:45,691 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 968 transitions. [2020-10-14 10:04:45,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:45,692 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 968 transitions. [2020-10-14 10:04:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 10:04:45,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:45,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:45,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:04:45,695 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:45,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:45,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1455605068, now seen corresponding path program 1 times [2020-10-14 10:04:45,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:45,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917253504] [2020-10-14 10:04:45,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:45,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:48,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 10:04:48,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3045 [2020-10-14 10:04:48,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:48,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:04:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:04:48,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:48,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:48,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:48,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:48,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:48,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:48,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:48,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:48,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917253504] [2020-10-14 10:04:48,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:48,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:48,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079180477] [2020-10-14 10:04:48,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:48,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:48,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:48,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:48,904 INFO L87 Difference]: Start difference. First operand 641 states and 968 transitions. Second operand 4 states. [2020-10-14 10:04:49,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:49,768 INFO L93 Difference]: Finished difference Result 1270 states and 1927 transitions. [2020-10-14 10:04:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:49,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-14 10:04:49,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:49,774 INFO L225 Difference]: With dead ends: 1270 [2020-10-14 10:04:49,774 INFO L226 Difference]: Without dead ends: 768 [2020-10-14 10:04:49,776 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 10:04:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-14 10:04:49,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2020-10-14 10:04:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-14 10:04:49,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1147 transitions. [2020-10-14 10:04:49,803 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1147 transitions. Word has length 110 [2020-10-14 10:04:49,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:49,804 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1147 transitions. [2020-10-14 10:04:49,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:49,804 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1147 transitions. [2020-10-14 10:04:49,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 10:04:49,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:49,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:49,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:04:49,807 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:49,808 INFO L82 PathProgramCache]: Analyzing trace with hash 758633420, now seen corresponding path program 1 times [2020-10-14 10:04:49,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:49,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902818093] [2020-10-14 10:04:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:50,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:50,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:50,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 10:04:50,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:50,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-14 10:04:50,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:50,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 10:04:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:04:50,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:50,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:50,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:50,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:50,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:50,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:50,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:50,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:50,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902818093] [2020-10-14 10:04:50,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:50,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:50,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146962324] [2020-10-14 10:04:50,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:50,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:50,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:50,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:50,483 INFO L87 Difference]: Start difference. First operand 766 states and 1147 transitions. Second operand 4 states. [2020-10-14 10:04:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:50,930 INFO L93 Difference]: Finished difference Result 1518 states and 2284 transitions. [2020-10-14 10:04:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:50,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-14 10:04:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:50,937 INFO L225 Difference]: With dead ends: 1518 [2020-10-14 10:04:50,937 INFO L226 Difference]: Without dead ends: 891 [2020-10-14 10:04:50,939 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 10:04:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-10-14 10:04:50,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2020-10-14 10:04:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-10-14 10:04:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1337 transitions. [2020-10-14 10:04:50,968 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1337 transitions. Word has length 127 [2020-10-14 10:04:50,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:50,968 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1337 transitions. [2020-10-14 10:04:50,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1337 transitions. [2020-10-14 10:04:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 10:04:50,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:50,971 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:50,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:04:50,972 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:50,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:50,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1858251708, now seen corresponding path program 1 times [2020-10-14 10:04:50,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:50,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056809716] [2020-10-14 10:04:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:51,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:51,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:51,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 10:04:51,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-10-14 10:04:51,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:51,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 10:04:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:51,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:51,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:51,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:51,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:51,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:51,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:04:51,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:51,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:51,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:04:51,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056809716] [2020-10-14 10:04:51,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:51,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:51,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743302900] [2020-10-14 10:04:51,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:51,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:51,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:51,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:51,963 INFO L87 Difference]: Start difference. First operand 891 states and 1337 transitions. Second operand 4 states. [2020-10-14 10:04:52,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:52,518 INFO L93 Difference]: Finished difference Result 1020 states and 1527 transitions. [2020-10-14 10:04:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:52,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-14 10:04:52,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:52,524 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 10:04:52,524 INFO L226 Difference]: Without dead ends: 1018 [2020-10-14 10:04:52,526 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 10:04:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-10-14 10:04:52,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2020-10-14 10:04:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-14 10:04:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1524 transitions. [2020-10-14 10:04:52,556 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1524 transitions. Word has length 133 [2020-10-14 10:04:52,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:52,557 INFO L479 AbstractCegarLoop]: Abstraction has 1016 states and 1524 transitions. [2020-10-14 10:04:52,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1524 transitions. [2020-10-14 10:04:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 10:04:52,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:52,563 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:04:52,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:04:52,564 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:52,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:52,564 INFO L82 PathProgramCache]: Analyzing trace with hash 128857992, now seen corresponding path program 1 times [2020-10-14 10:04:52,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:52,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59636807] [2020-10-14 10:04:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:52,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:52,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:52,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:55,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:57,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:57,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 10:04:57,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 10:04:57,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:57,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:57,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:57,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:04:57,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:57,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:57,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:57,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:57,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:57,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:57,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:57,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:57,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:04:57,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59636807] [2020-10-14 10:04:57,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:57,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:57,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172792522] [2020-10-14 10:04:57,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:57,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:57,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:57,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:57,770 INFO L87 Difference]: Start difference. First operand 1016 states and 1524 transitions. Second operand 5 states. [2020-10-14 10:04:59,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:59,019 INFO L93 Difference]: Finished difference Result 2844 states and 4290 transitions. [2020-10-14 10:04:59,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:59,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-14 10:04:59,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:59,030 INFO L225 Difference]: With dead ends: 2844 [2020-10-14 10:04:59,030 INFO L226 Difference]: Without dead ends: 1842 [2020-10-14 10:04:59,034 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 10:04:59,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2020-10-14 10:04:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1312. [2020-10-14 10:04:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2020-10-14 10:04:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 2068 transitions. [2020-10-14 10:04:59,115 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 2068 transitions. Word has length 169 [2020-10-14 10:04:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:59,116 INFO L479 AbstractCegarLoop]: Abstraction has 1312 states and 2068 transitions. [2020-10-14 10:04:59,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 2068 transitions. [2020-10-14 10:04:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 10:04:59,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:59,121 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:04:59,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:04:59,121 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:59,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1774386870, now seen corresponding path program 1 times [2020-10-14 10:04:59,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:59,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55077005] [2020-10-14 10:04:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:59,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:59,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:01,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:04,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:04,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 10:05:04,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:04,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 10:05:04,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:04,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:05:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:05:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:04,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:04,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:04,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:04,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:04,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:04,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:05:04,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:04,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:04,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:05:04,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55077005] [2020-10-14 10:05:04,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:04,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:04,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732010072] [2020-10-14 10:05:04,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:04,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:04,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:04,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:04,320 INFO L87 Difference]: Start difference. First operand 1312 states and 2068 transitions. Second operand 5 states. [2020-10-14 10:05:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:05,767 INFO L93 Difference]: Finished difference Result 3108 states and 4791 transitions. [2020-10-14 10:05:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:05,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 10:05:05,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:05,782 INFO L225 Difference]: With dead ends: 3108 [2020-10-14 10:05:05,782 INFO L226 Difference]: Without dead ends: 1810 [2020-10-14 10:05:05,791 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 10:05:05,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2020-10-14 10:05:05,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1320. [2020-10-14 10:05:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2020-10-14 10:05:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2076 transitions. [2020-10-14 10:05:05,878 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2076 transitions. Word has length 170 [2020-10-14 10:05:05,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:05,878 INFO L479 AbstractCegarLoop]: Abstraction has 1320 states and 2076 transitions. [2020-10-14 10:05:05,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:05,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2076 transitions. [2020-10-14 10:05:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 10:05:05,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:05,886 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:05,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:05:05,887 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:05,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1383375992, now seen corresponding path program 1 times [2020-10-14 10:05:05,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:05,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338278651] [2020-10-14 10:05:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:06,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:07,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:10,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:10,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 10:05:10,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:10,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:05:10,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:10,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:10,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 10:05:10,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:05:10,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 10:05:10,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:11,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:11,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:11,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:11,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:11,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:11,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:05:11,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:11,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:11,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:11,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:11,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:11,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:05:11,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338278651] [2020-10-14 10:05:11,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:05:11,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 10:05:11,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362706846] [2020-10-14 10:05:11,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:05:11,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:11,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:05:11,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:05:11,784 INFO L87 Difference]: Start difference. First operand 1320 states and 2076 transitions. Second operand 11 states. [2020-10-14 10:05:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:15,555 INFO L93 Difference]: Finished difference Result 7044 states and 10913 transitions. [2020-10-14 10:05:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 10:05:15,556 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-10-14 10:05:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:15,584 INFO L225 Difference]: With dead ends: 7044 [2020-10-14 10:05:15,584 INFO L226 Difference]: Without dead ends: 5738 [2020-10-14 10:05:15,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-10-14 10:05:15,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5738 states. [2020-10-14 10:05:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5738 to 3168. [2020-10-14 10:05:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2020-10-14 10:05:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 5182 transitions. [2020-10-14 10:05:15,742 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 5182 transitions. Word has length 170 [2020-10-14 10:05:15,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:15,743 INFO L479 AbstractCegarLoop]: Abstraction has 3168 states and 5182 transitions. [2020-10-14 10:05:15,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:05:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 5182 transitions. [2020-10-14 10:05:15,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 10:05:15,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:15,755 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:15,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:05:15,756 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:15,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:15,756 INFO L82 PathProgramCache]: Analyzing trace with hash 57682490, now seen corresponding path program 1 times [2020-10-14 10:05:15,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:15,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003550477] [2020-10-14 10:05:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:15,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:15,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:18,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:20,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:20,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 10:05:20,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:20,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4701 [2020-10-14 10:05:20,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:20,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:05:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 10:05:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:05:20,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:20,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:20,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:20,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:20,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:20,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:20,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:05:20,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:20,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:20,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:05:20,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003550477] [2020-10-14 10:05:20,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:20,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:05:20,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426080128] [2020-10-14 10:05:20,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:05:20,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:20,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:05:20,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:20,673 INFO L87 Difference]: Start difference. First operand 3168 states and 5182 transitions. Second operand 6 states. [2020-10-14 10:05:22,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:22,242 INFO L93 Difference]: Finished difference Result 9700 states and 15642 transitions. [2020-10-14 10:05:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:05:22,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-14 10:05:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:22,282 INFO L225 Difference]: With dead ends: 9700 [2020-10-14 10:05:22,282 INFO L226 Difference]: Without dead ends: 6546 [2020-10-14 10:05:22,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:05:22,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6546 states. [2020-10-14 10:05:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6546 to 4440. [2020-10-14 10:05:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4440 states. [2020-10-14 10:05:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 7526 transitions. [2020-10-14 10:05:22,481 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 7526 transitions. Word has length 171 [2020-10-14 10:05:22,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:22,482 INFO L479 AbstractCegarLoop]: Abstraction has 4440 states and 7526 transitions. [2020-10-14 10:05:22,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:05:22,482 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 7526 transitions. [2020-10-14 10:05:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 10:05:22,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:22,494 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:22,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:05:22,494 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:22,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:22,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1314124808, now seen corresponding path program 1 times [2020-10-14 10:05:22,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:22,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426288611] [2020-10-14 10:05:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:22,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:25,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:26,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:26,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 10:05:26,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:26,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4185 [2020-10-14 10:05:26,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:26,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:26,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:05:26,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 10:05:26,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:05:26,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:26,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:26,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:26,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:26,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:26,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:26,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:26,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:26,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:26,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:26,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:26,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:05:26,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426288611] [2020-10-14 10:05:26,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:26,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:05:26,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765730588] [2020-10-14 10:05:26,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:05:26,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:26,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:05:26,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:26,904 INFO L87 Difference]: Start difference. First operand 4440 states and 7526 transitions. Second operand 6 states. [2020-10-14 10:05:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:28,320 INFO L93 Difference]: Finished difference Result 11562 states and 19071 transitions. [2020-10-14 10:05:28,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:05:28,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-14 10:05:28,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:28,372 INFO L225 Difference]: With dead ends: 11562 [2020-10-14 10:05:28,372 INFO L226 Difference]: Without dead ends: 7136 [2020-10-14 10:05:28,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:05:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7136 states. [2020-10-14 10:05:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7136 to 4448. [2020-10-14 10:05:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4448 states. [2020-10-14 10:05:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 7534 transitions. [2020-10-14 10:05:28,596 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 7534 transitions. Word has length 171 [2020-10-14 10:05:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:28,597 INFO L479 AbstractCegarLoop]: Abstraction has 4448 states and 7534 transitions. [2020-10-14 10:05:28,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:05:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 7534 transitions. [2020-10-14 10:05:28,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 10:05:28,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:28,611 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:05:28,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:05:28,611 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:28,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:28,612 INFO L82 PathProgramCache]: Analyzing trace with hash -287446943, now seen corresponding path program 1 times [2020-10-14 10:05:28,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:28,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108534456] [2020-10-14 10:05:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:28,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:28,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:33,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 10:05:33,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 10:05:33,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:33,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 10:05:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:05:33,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:33,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:33,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:33,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:33,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:33,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:33,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:33,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:33,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-14 10:05:33,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108534456] [2020-10-14 10:05:33,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:33,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:33,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669683617] [2020-10-14 10:05:33,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:33,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:33,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:33,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:33,773 INFO L87 Difference]: Start difference. First operand 4448 states and 7534 transitions. Second operand 5 states. [2020-10-14 10:05:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:34,825 INFO L93 Difference]: Finished difference Result 10378 states and 17341 transitions. [2020-10-14 10:05:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:34,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-14 10:05:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:34,842 INFO L225 Difference]: With dead ends: 10378 [2020-10-14 10:05:34,842 INFO L226 Difference]: Without dead ends: 5944 [2020-10-14 10:05:34,851 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 10:05:34,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2020-10-14 10:05:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5040. [2020-10-14 10:05:34,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5040 states. [2020-10-14 10:05:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 8622 transitions. [2020-10-14 10:05:34,994 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 8622 transitions. Word has length 182 [2020-10-14 10:05:34,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:34,994 INFO L479 AbstractCegarLoop]: Abstraction has 5040 states and 8622 transitions. [2020-10-14 10:05:34,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 8622 transitions. [2020-10-14 10:05:35,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:05:35,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:35,011 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:05:35,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:05:35,011 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:35,012 INFO L82 PathProgramCache]: Analyzing trace with hash -2073794395, now seen corresponding path program 1 times [2020-10-14 10:05:35,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:35,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032778933] [2020-10-14 10:05:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:35,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:35,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:35,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:39,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:40,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:40,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:05:40,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:05:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:05:40,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:40,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:40,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:40,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 10:05:40,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:40,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:40,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:40,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:40,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:40,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:40,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:05:40,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:40,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:40,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:40,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:40,234 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:05:40,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032778933] [2020-10-14 10:05:40,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:40,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:40,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332179365] [2020-10-14 10:05:40,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:40,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:40,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:40,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:40,237 INFO L87 Difference]: Start difference. First operand 5040 states and 8622 transitions. Second operand 5 states. [2020-10-14 10:05:41,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:41,120 INFO L93 Difference]: Finished difference Result 15001 states and 25647 transitions. [2020-10-14 10:05:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:41,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:05:41,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:41,155 INFO L225 Difference]: With dead ends: 15001 [2020-10-14 10:05:41,156 INFO L226 Difference]: Without dead ends: 9975 [2020-10-14 10:05:41,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9975 states. [2020-10-14 10:05:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9975 to 9973. [2020-10-14 10:05:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9973 states. [2020-10-14 10:05:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9973 states to 9973 states and 16937 transitions. [2020-10-14 10:05:41,504 INFO L78 Accepts]: Start accepts. Automaton has 9973 states and 16937 transitions. Word has length 183 [2020-10-14 10:05:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:41,505 INFO L479 AbstractCegarLoop]: Abstraction has 9973 states and 16937 transitions. [2020-10-14 10:05:41,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 9973 states and 16937 transitions. [2020-10-14 10:05:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:05:41,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:41,524 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:05:41,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:05:41,524 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:41,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:41,525 INFO L82 PathProgramCache]: Analyzing trace with hash -162751837, now seen corresponding path program 1 times [2020-10-14 10:05:41,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:41,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005371476] [2020-10-14 10:05:41,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:43,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:46,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:05:46,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:46,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 10:05:46,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:46,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:46,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:05:46,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:05:46,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:46,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:46,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:46,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:46,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:46,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:46,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:05:46,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005371476] [2020-10-14 10:05:46,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:46,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:46,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221500980] [2020-10-14 10:05:46,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:46,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:46,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:46,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:46,683 INFO L87 Difference]: Start difference. First operand 9973 states and 16937 transitions. Second operand 5 states. [2020-10-14 10:05:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:47,806 INFO L93 Difference]: Finished difference Result 16689 states and 27979 transitions. [2020-10-14 10:05:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:47,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:05:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:47,831 INFO L225 Difference]: With dead ends: 16689 [2020-10-14 10:05:47,832 INFO L226 Difference]: Without dead ends: 11615 [2020-10-14 10:05:47,844 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 10:05:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11615 states. [2020-10-14 10:05:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11615 to 10557. [2020-10-14 10:05:48,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10557 states. [2020-10-14 10:05:48,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10557 states to 10557 states and 18001 transitions. [2020-10-14 10:05:48,160 INFO L78 Accepts]: Start accepts. Automaton has 10557 states and 18001 transitions. Word has length 183 [2020-10-14 10:05:48,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:48,161 INFO L479 AbstractCegarLoop]: Abstraction has 10557 states and 18001 transitions. [2020-10-14 10:05:48,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand 10557 states and 18001 transitions. [2020-10-14 10:05:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:05:48,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:48,180 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:05:48,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:05:48,181 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:48,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1753835773, now seen corresponding path program 1 times [2020-10-14 10:05:48,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:48,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540605460] [2020-10-14 10:05:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:48,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:53,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:53,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:05:53,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 10:05:53,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:53,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 10:05:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:05:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:53,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:53,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:53,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:53,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:53,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:53,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-14 10:05:53,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540605460] [2020-10-14 10:05:53,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:53,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:53,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397705546] [2020-10-14 10:05:53,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:53,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:53,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:53,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:53,331 INFO L87 Difference]: Start difference. First operand 10557 states and 18001 transitions. Second operand 5 states. [2020-10-14 10:05:54,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:54,463 INFO L93 Difference]: Finished difference Result 22775 states and 38202 transitions. [2020-10-14 10:05:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:54,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:05:54,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:54,486 INFO L225 Difference]: With dead ends: 22775 [2020-10-14 10:05:54,486 INFO L226 Difference]: Without dead ends: 12237 [2020-10-14 10:05:54,508 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 10:05:54,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12237 states. [2020-10-14 10:05:54,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12237 to 10589. [2020-10-14 10:05:54,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10589 states. [2020-10-14 10:05:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10589 states to 10589 states and 18033 transitions. [2020-10-14 10:05:54,828 INFO L78 Accepts]: Start accepts. Automaton has 10589 states and 18033 transitions. Word has length 183 [2020-10-14 10:05:54,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:54,828 INFO L479 AbstractCegarLoop]: Abstraction has 10589 states and 18033 transitions. [2020-10-14 10:05:54,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 10589 states and 18033 transitions. [2020-10-14 10:05:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:05:54,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:54,848 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:05:54,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:05:54,849 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:54,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:54,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1878796561, now seen corresponding path program 1 times [2020-10-14 10:05:54,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:54,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587637208] [2020-10-14 10:05:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:54,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:54,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:54,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:59,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:59,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:05:59,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:59,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4596 [2020-10-14 10:05:59,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:59,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:59,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:05:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:05:59,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:59,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:59,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:59,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:59,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:59,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:59,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:59,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 10:05:59,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587637208] [2020-10-14 10:05:59,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:59,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:59,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415105132] [2020-10-14 10:05:59,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:59,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:59,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:59,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:59,631 INFO L87 Difference]: Start difference. First operand 10589 states and 18033 transitions. Second operand 5 states. [2020-10-14 10:06:00,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:00,763 INFO L93 Difference]: Finished difference Result 24135 states and 40566 transitions. [2020-10-14 10:06:00,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:00,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:06:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:00,785 INFO L225 Difference]: With dead ends: 24135 [2020-10-14 10:06:00,785 INFO L226 Difference]: Without dead ends: 13565 [2020-10-14 10:06:00,803 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 10:06:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13565 states. [2020-10-14 10:06:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13565 to 11757. [2020-10-14 10:06:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11757 states. [2020-10-14 10:06:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11757 states to 11757 states and 20161 transitions. [2020-10-14 10:06:01,158 INFO L78 Accepts]: Start accepts. Automaton has 11757 states and 20161 transitions. Word has length 183 [2020-10-14 10:06:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:01,159 INFO L479 AbstractCegarLoop]: Abstraction has 11757 states and 20161 transitions. [2020-10-14 10:06:01,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 11757 states and 20161 transitions. [2020-10-14 10:06:01,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:06:01,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:01,178 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:01,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:06:01,178 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:01,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:01,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1078060493, now seen corresponding path program 1 times [2020-10-14 10:06:01,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:01,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151975345] [2020-10-14 10:06:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:01,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:01,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:05,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:05,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:06:05,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4155 [2020-10-14 10:06:05,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:05,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:05,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:05,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:06:05,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:06:05,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:05,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:05,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:05,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:05,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:05,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:05,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:05,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:05,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:05,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:05,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:05,434 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-14 10:06:05,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151975345] [2020-10-14 10:06:05,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:05,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:05,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990624308] [2020-10-14 10:06:05,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:05,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:05,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:05,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:05,437 INFO L87 Difference]: Start difference. First operand 11757 states and 20161 transitions. Second operand 5 states. [2020-10-14 10:06:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:06,555 INFO L93 Difference]: Finished difference Result 19073 states and 32267 transitions. [2020-10-14 10:06:06,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:06,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:06:06,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:06,572 INFO L225 Difference]: With dead ends: 19073 [2020-10-14 10:06:06,572 INFO L226 Difference]: Without dead ends: 12815 [2020-10-14 10:06:06,585 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 10:06:06,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12815 states. [2020-10-14 10:06:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12815 to 11757. [2020-10-14 10:06:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11757 states. [2020-10-14 10:06:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11757 states to 11757 states and 20145 transitions. [2020-10-14 10:06:06,906 INFO L78 Accepts]: Start accepts. Automaton has 11757 states and 20145 transitions. Word has length 184 [2020-10-14 10:06:06,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:06,906 INFO L479 AbstractCegarLoop]: Abstraction has 11757 states and 20145 transitions. [2020-10-14 10:06:06,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 11757 states and 20145 transitions. [2020-10-14 10:06:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:06:06,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:06,920 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:06,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:06:06,921 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:06,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1858450013, now seen corresponding path program 2 times [2020-10-14 10:06:06,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:06,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591619175] [2020-10-14 10:06:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:07,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:11,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:11,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:06:11,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:06:11,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:11,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 10:06:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:06:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:12,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:12,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:12,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:12,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:12,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:06:12,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591619175] [2020-10-14 10:06:12,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:12,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:12,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276461524] [2020-10-14 10:06:12,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:12,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:12,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:12,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:12,024 INFO L87 Difference]: Start difference. First operand 11757 states and 20145 transitions. Second operand 5 states. [2020-10-14 10:06:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:13,147 INFO L93 Difference]: Finished difference Result 19073 states and 32235 transitions. [2020-10-14 10:06:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:13,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:06:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:13,163 INFO L225 Difference]: With dead ends: 19073 [2020-10-14 10:06:13,164 INFO L226 Difference]: Without dead ends: 12815 [2020-10-14 10:06:13,176 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 10:06:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12815 states. [2020-10-14 10:06:13,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12815 to 11757. [2020-10-14 10:06:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11757 states. [2020-10-14 10:06:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11757 states to 11757 states and 20129 transitions. [2020-10-14 10:06:13,474 INFO L78 Accepts]: Start accepts. Automaton has 11757 states and 20129 transitions. Word has length 184 [2020-10-14 10:06:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:13,474 INFO L479 AbstractCegarLoop]: Abstraction has 11757 states and 20129 transitions. [2020-10-14 10:06:13,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 11757 states and 20129 transitions. [2020-10-14 10:06:13,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:06:13,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:13,484 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:13,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:06:13,484 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:13,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:13,485 INFO L82 PathProgramCache]: Analyzing trace with hash -144456349, now seen corresponding path program 3 times [2020-10-14 10:06:13,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:13,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091571430] [2020-10-14 10:06:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:13,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:13,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:17,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:17,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:06:17,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:17,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4486 [2020-10-14 10:06:17,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:17,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 10:06:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:06:17,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:18,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:18,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:18,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:18,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:18,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:18,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:06:18,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091571430] [2020-10-14 10:06:18,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:18,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:18,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465211656] [2020-10-14 10:06:18,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:18,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:18,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:18,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:18,085 INFO L87 Difference]: Start difference. First operand 11757 states and 20129 transitions. Second operand 5 states. [2020-10-14 10:06:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:19,184 INFO L93 Difference]: Finished difference Result 19073 states and 32203 transitions. [2020-10-14 10:06:19,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:19,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:06:19,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:19,197 INFO L225 Difference]: With dead ends: 19073 [2020-10-14 10:06:19,197 INFO L226 Difference]: Without dead ends: 12815 [2020-10-14 10:06:19,206 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 10:06:19,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12815 states. [2020-10-14 10:06:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12815 to 11821. [2020-10-14 10:06:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11821 states. [2020-10-14 10:06:19,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11821 states to 11821 states and 20225 transitions. [2020-10-14 10:06:19,448 INFO L78 Accepts]: Start accepts. Automaton has 11821 states and 20225 transitions. Word has length 184 [2020-10-14 10:06:19,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:19,448 INFO L479 AbstractCegarLoop]: Abstraction has 11821 states and 20225 transitions. [2020-10-14 10:06:19,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:19,448 INFO L276 IsEmpty]: Start isEmpty. Operand 11821 states and 20225 transitions. [2020-10-14 10:06:19,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:06:19,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:19,458 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:19,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:06:19,458 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:19,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:19,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1324416763, now seen corresponding path program 1 times [2020-10-14 10:06:19,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:19,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157706400] [2020-10-14 10:06:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:19,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:19,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:19,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:24,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:24,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:06:24,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:24,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:06:24,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:24,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:06:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:06:24,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:24,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:24,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:24,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:24,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:24,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:24,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:24,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:24,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:24,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:06:24,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157706400] [2020-10-14 10:06:24,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:24,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:24,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316800681] [2020-10-14 10:06:24,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:24,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:24,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:24,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:24,568 INFO L87 Difference]: Start difference. First operand 11821 states and 20225 transitions. Second operand 5 states. [2020-10-14 10:06:25,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:25,691 INFO L93 Difference]: Finished difference Result 19073 states and 32213 transitions. [2020-10-14 10:06:25,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:25,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:06:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:25,711 INFO L225 Difference]: With dead ends: 19073 [2020-10-14 10:06:25,711 INFO L226 Difference]: Without dead ends: 12751 [2020-10-14 10:06:25,722 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 10:06:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12751 states. [2020-10-14 10:06:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12751 to 11821. [2020-10-14 10:06:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11821 states. [2020-10-14 10:06:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11821 states to 11821 states and 20209 transitions. [2020-10-14 10:06:25,963 INFO L78 Accepts]: Start accepts. Automaton has 11821 states and 20209 transitions. Word has length 184 [2020-10-14 10:06:25,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:25,963 INFO L479 AbstractCegarLoop]: Abstraction has 11821 states and 20209 transitions. [2020-10-14 10:06:25,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 11821 states and 20209 transitions. [2020-10-14 10:06:25,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:06:25,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:25,974 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:25,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:06:25,974 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:25,975 INFO L82 PathProgramCache]: Analyzing trace with hash -177955790, now seen corresponding path program 1 times [2020-10-14 10:06:25,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:25,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158309481] [2020-10-14 10:06:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:26,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:31,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:31,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:06:31,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:31,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 10:06:31,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:31,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:06:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:06:31,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:31,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:31,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:31,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:31,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:31,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:31,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:31,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:31,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:31,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 10:06:31,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158309481] [2020-10-14 10:06:31,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:31,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:31,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161590310] [2020-10-14 10:06:31,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:31,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:31,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:31,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:31,134 INFO L87 Difference]: Start difference. First operand 11821 states and 20209 transitions. Second operand 5 states. [2020-10-14 10:06:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:32,375 INFO L93 Difference]: Finished difference Result 26761 states and 45147 transitions. [2020-10-14 10:06:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:32,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:06:32,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:32,393 INFO L225 Difference]: With dead ends: 26761 [2020-10-14 10:06:32,393 INFO L226 Difference]: Without dead ends: 14959 [2020-10-14 10:06:32,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 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 10:06:32,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14959 states. [2020-10-14 10:06:32,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14959 to 12605. [2020-10-14 10:06:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12605 states. [2020-10-14 10:06:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12605 states to 12605 states and 21537 transitions. [2020-10-14 10:06:32,615 INFO L78 Accepts]: Start accepts. Automaton has 12605 states and 21537 transitions. Word has length 184 [2020-10-14 10:06:32,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:32,615 INFO L479 AbstractCegarLoop]: Abstraction has 12605 states and 21537 transitions. [2020-10-14 10:06:32,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 12605 states and 21537 transitions. [2020-10-14 10:06:32,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:06:32,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:32,627 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:32,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:06:32,627 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:32,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:32,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1434092493, now seen corresponding path program 4 times [2020-10-14 10:06:32,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:32,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603560925] [2020-10-14 10:06:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:32,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:37,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:37,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:06:37,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 10:06:37,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:37,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 10:06:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:06:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:37,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:37,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:37,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:37,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:37,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:37,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:37,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:06:37,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603560925] [2020-10-14 10:06:37,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:37,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:37,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059110276] [2020-10-14 10:06:37,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:37,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:37,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:37,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:37,773 INFO L87 Difference]: Start difference. First operand 12605 states and 21537 transitions. Second operand 5 states. [2020-10-14 10:06:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:38,909 INFO L93 Difference]: Finished difference Result 20249 states and 34173 transitions. [2020-10-14 10:06:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:38,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:06:38,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:38,922 INFO L225 Difference]: With dead ends: 20249 [2020-10-14 10:06:38,923 INFO L226 Difference]: Without dead ends: 13535 [2020-10-14 10:06:38,930 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 10:06:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13535 states. [2020-10-14 10:06:39,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13535 to 12637. [2020-10-14 10:06:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12637 states. [2020-10-14 10:06:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12637 states to 12637 states and 21585 transitions. [2020-10-14 10:06:39,221 INFO L78 Accepts]: Start accepts. Automaton has 12637 states and 21585 transitions. Word has length 184 [2020-10-14 10:06:39,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:39,222 INFO L479 AbstractCegarLoop]: Abstraction has 12637 states and 21585 transitions. [2020-10-14 10:06:39,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:39,222 INFO L276 IsEmpty]: Start isEmpty. Operand 12637 states and 21585 transitions. [2020-10-14 10:06:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:06:39,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:39,232 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:39,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:06:39,232 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash -108307916, now seen corresponding path program 1 times [2020-10-14 10:06:39,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:39,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359791662] [2020-10-14 10:06:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:39,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:44,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:44,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:06:44,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 10:06:44,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:44,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:44,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:44,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:06:44,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:06:44,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:44,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:44,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:44,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:44,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:44,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:44,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:44,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:06:44,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359791662] [2020-10-14 10:06:44,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:44,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:44,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897826626] [2020-10-14 10:06:44,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:44,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:44,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:44,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:44,385 INFO L87 Difference]: Start difference. First operand 12637 states and 21585 transitions. Second operand 5 states. [2020-10-14 10:06:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:45,412 INFO L93 Difference]: Finished difference Result 28849 states and 48625 transitions. [2020-10-14 10:06:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:45,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:06:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:45,429 INFO L225 Difference]: With dead ends: 28849 [2020-10-14 10:06:45,429 INFO L226 Difference]: Without dead ends: 16231 [2020-10-14 10:06:45,441 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 10:06:45,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16231 states. [2020-10-14 10:06:45,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16231 to 12711. [2020-10-14 10:06:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12711 states. [2020-10-14 10:06:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 21695 transitions. [2020-10-14 10:06:45,672 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 21695 transitions. Word has length 184 [2020-10-14 10:06:45,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:45,673 INFO L479 AbstractCegarLoop]: Abstraction has 12711 states and 21695 transitions. [2020-10-14 10:06:45,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 21695 transitions. [2020-10-14 10:06:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:06:45,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:45,682 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:45,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:06:45,682 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:45,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:45,682 INFO L82 PathProgramCache]: Analyzing trace with hash -263714255, now seen corresponding path program 1 times [2020-10-14 10:06:45,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:45,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574606350] [2020-10-14 10:06:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:45,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:47,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:06:47,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:47,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-10-14 10:06:47,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:47,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:06:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:06:47,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:47,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:47,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:47,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:47,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:47,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:47,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:47,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 10:06:47,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574606350] [2020-10-14 10:06:47,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:47,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:47,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247720809] [2020-10-14 10:06:47,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:47,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:47,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:47,254 INFO L87 Difference]: Start difference. First operand 12711 states and 21695 transitions. Second operand 5 states. [2020-10-14 10:06:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:48,409 INFO L93 Difference]: Finished difference Result 28193 states and 47608 transitions. [2020-10-14 10:06:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:48,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:06:48,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:48,425 INFO L225 Difference]: With dead ends: 28193 [2020-10-14 10:06:48,425 INFO L226 Difference]: Without dead ends: 15559 [2020-10-14 10:06:48,438 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 10:06:48,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15559 states. [2020-10-14 10:06:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15559 to 12711. [2020-10-14 10:06:48,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12711 states. [2020-10-14 10:06:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 21695 transitions. [2020-10-14 10:06:48,667 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 21695 transitions. Word has length 184 [2020-10-14 10:06:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:48,667 INFO L479 AbstractCegarLoop]: Abstraction has 12711 states and 21695 transitions. [2020-10-14 10:06:48,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 21695 transitions. [2020-10-14 10:06:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:06:48,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:48,676 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:48,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:06:48,677 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:48,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:48,677 INFO L82 PathProgramCache]: Analyzing trace with hash 570407961, now seen corresponding path program 1 times [2020-10-14 10:06:48,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:48,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799165239] [2020-10-14 10:06:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:48,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:52,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:52,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:06:52,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3965 [2020-10-14 10:06:52,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:52,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:06:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:06:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:52,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:52,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:52,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:52,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-14 10:06:52,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799165239] [2020-10-14 10:06:52,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:52,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:52,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947548714] [2020-10-14 10:06:52,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:52,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:52,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:52,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:52,743 INFO L87 Difference]: Start difference. First operand 12711 states and 21695 transitions. Second operand 5 states. [2020-10-14 10:06:53,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:53,942 INFO L93 Difference]: Finished difference Result 20355 states and 34299 transitions. [2020-10-14 10:06:53,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:53,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:06:53,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:53,956 INFO L225 Difference]: With dead ends: 20355 [2020-10-14 10:06:53,956 INFO L226 Difference]: Without dead ends: 13609 [2020-10-14 10:06:53,964 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 10:06:53,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13609 states. [2020-10-14 10:06:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13609 to 12711. [2020-10-14 10:06:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12711 states. [2020-10-14 10:06:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 21679 transitions. [2020-10-14 10:06:54,226 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 21679 transitions. Word has length 185 [2020-10-14 10:06:54,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:54,226 INFO L479 AbstractCegarLoop]: Abstraction has 12711 states and 21679 transitions. [2020-10-14 10:06:54,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:54,226 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 21679 transitions. [2020-10-14 10:06:54,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:06:54,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:54,236 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 10:06:54,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:06:54,236 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1375910882, now seen corresponding path program 1 times [2020-10-14 10:06:54,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:54,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682390450] [2020-10-14 10:06:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:54,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:57,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:59,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:59,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:06:59,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 10:06:59,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:59,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:06:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:59,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:59,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:59,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:59,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:59,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:59,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:59,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:59,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-14 10:06:59,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682390450] [2020-10-14 10:06:59,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:59,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:59,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126859314] [2020-10-14 10:06:59,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:59,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:59,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:59,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:59,346 INFO L87 Difference]: Start difference. First operand 12711 states and 21679 transitions. Second operand 5 states. [2020-10-14 10:07:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:00,312 INFO L93 Difference]: Finished difference Result 19589 states and 33295 transitions. [2020-10-14 10:07:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:00,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:07:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:00,325 INFO L225 Difference]: With dead ends: 19589 [2020-10-14 10:07:00,325 INFO L226 Difference]: Without dead ends: 12843 [2020-10-14 10:07:00,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 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 10:07:00,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12843 states. [2020-10-14 10:07:00,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12843 to 12711. [2020-10-14 10:07:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12711 states. [2020-10-14 10:07:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 21677 transitions. [2020-10-14 10:07:00,554 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 21677 transitions. Word has length 185 [2020-10-14 10:07:00,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:00,554 INFO L479 AbstractCegarLoop]: Abstraction has 12711 states and 21677 transitions. [2020-10-14 10:07:00,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:00,554 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 21677 transitions. [2020-10-14 10:07:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:07:00,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:00,564 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:00,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:07:00,564 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:00,565 INFO L82 PathProgramCache]: Analyzing trace with hash 807622518, now seen corresponding path program 1 times [2020-10-14 10:07:00,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:00,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665897799] [2020-10-14 10:07:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:00,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:02,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:05,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:05,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:07:05,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 10:07:05,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:05,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:07:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:05,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:05,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:05,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:05,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:05,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:05,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:05,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-14 10:07:05,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665897799] [2020-10-14 10:07:05,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:05,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:05,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860581102] [2020-10-14 10:07:05,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:05,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:05,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:05,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:05,681 INFO L87 Difference]: Start difference. First operand 12711 states and 21677 transitions. Second operand 5 states. [2020-10-14 10:07:06,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:06,663 INFO L93 Difference]: Finished difference Result 19589 states and 33293 transitions. [2020-10-14 10:07:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:06,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:07:06,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:06,677 INFO L225 Difference]: With dead ends: 19589 [2020-10-14 10:07:06,677 INFO L226 Difference]: Without dead ends: 12843 [2020-10-14 10:07:06,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 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 10:07:06,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12843 states. [2020-10-14 10:07:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12843 to 12711. [2020-10-14 10:07:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12711 states. [2020-10-14 10:07:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 21675 transitions. [2020-10-14 10:07:06,903 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 21675 transitions. Word has length 185 [2020-10-14 10:07:06,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:06,904 INFO L479 AbstractCegarLoop]: Abstraction has 12711 states and 21675 transitions. [2020-10-14 10:07:06,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 21675 transitions. [2020-10-14 10:07:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:07:06,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:06,913 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:06,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:07:06,913 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:06,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:06,913 INFO L82 PathProgramCache]: Analyzing trace with hash -425182812, now seen corresponding path program 1 times [2020-10-14 10:07:06,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:06,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010358122] [2020-10-14 10:07:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:11,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:11,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:07:11,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:07:11,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:11,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 10:07:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:07:11,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:11,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:11,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:11,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:11,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:11,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:11,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:11,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:11,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:11,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:11,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:07:12,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010358122] [2020-10-14 10:07:12,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:12,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:12,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550938016] [2020-10-14 10:07:12,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:12,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:12,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:12,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:12,014 INFO L87 Difference]: Start difference. First operand 12711 states and 21675 transitions. Second operand 5 states. [2020-10-14 10:07:13,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:13,171 INFO L93 Difference]: Finished difference Result 20291 states and 34175 transitions. [2020-10-14 10:07:13,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:13,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:07:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:13,185 INFO L225 Difference]: With dead ends: 20291 [2020-10-14 10:07:13,186 INFO L226 Difference]: Without dead ends: 13545 [2020-10-14 10:07:13,196 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 10:07:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13545 states. [2020-10-14 10:07:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13545 to 12711. [2020-10-14 10:07:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12711 states. [2020-10-14 10:07:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 21659 transitions. [2020-10-14 10:07:13,457 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 21659 transitions. Word has length 185 [2020-10-14 10:07:13,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:13,458 INFO L479 AbstractCegarLoop]: Abstraction has 12711 states and 21659 transitions. [2020-10-14 10:07:13,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 21659 transitions. [2020-10-14 10:07:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:07:13,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:13,466 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 10:07:13,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:07:13,467 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:13,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:13,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1766305258, now seen corresponding path program 2 times [2020-10-14 10:07:13,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:13,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292832731] [2020-10-14 10:07:13,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:13,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:15,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:18,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:18,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:07:18,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 10:07:18,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:18,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:07:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:07:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:18,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:18,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:18,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:18,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:18,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:18,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:18,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:18,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:07:18,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292832731] [2020-10-14 10:07:18,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:18,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:18,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331808694] [2020-10-14 10:07:18,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:18,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:18,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:18,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:18,596 INFO L87 Difference]: Start difference. First operand 12711 states and 21659 transitions. Second operand 5 states. [2020-10-14 10:07:19,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:19,659 INFO L93 Difference]: Finished difference Result 27697 states and 46379 transitions. [2020-10-14 10:07:19,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:19,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:07:19,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:19,675 INFO L225 Difference]: With dead ends: 27697 [2020-10-14 10:07:19,675 INFO L226 Difference]: Without dead ends: 15063 [2020-10-14 10:07:19,686 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 10:07:19,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15063 states. [2020-10-14 10:07:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15063 to 12711. [2020-10-14 10:07:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12711 states. [2020-10-14 10:07:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 21577 transitions. [2020-10-14 10:07:19,921 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 21577 transitions. Word has length 185 [2020-10-14 10:07:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:19,921 INFO L479 AbstractCegarLoop]: Abstraction has 12711 states and 21577 transitions. [2020-10-14 10:07:19,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:19,921 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 21577 transitions. [2020-10-14 10:07:19,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:07:19,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:19,933 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:19,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:07:19,933 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:19,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:19,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2104979469, now seen corresponding path program 1 times [2020-10-14 10:07:19,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:19,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191842741] [2020-10-14 10:07:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:19,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:20,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:24,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:24,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:07:24,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:24,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4666 [2020-10-14 10:07:24,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:24,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 10:07:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:07:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:24,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:24,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:24,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:24,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:24,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:24,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:07:24,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191842741] [2020-10-14 10:07:24,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:24,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:24,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820953393] [2020-10-14 10:07:24,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:24,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:24,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:24,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:24,695 INFO L87 Difference]: Start difference. First operand 12711 states and 21577 transitions. Second operand 5 states. [2020-10-14 10:07:25,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:25,864 INFO L93 Difference]: Finished difference Result 20275 states and 33997 transitions. [2020-10-14 10:07:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:25,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:07:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:25,878 INFO L225 Difference]: With dead ends: 20275 [2020-10-14 10:07:25,878 INFO L226 Difference]: Without dead ends: 13529 [2020-10-14 10:07:25,886 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 10:07:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13529 states. [2020-10-14 10:07:26,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13529 to 12711. [2020-10-14 10:07:26,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12711 states. [2020-10-14 10:07:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 21561 transitions. [2020-10-14 10:07:26,122 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 21561 transitions. Word has length 185 [2020-10-14 10:07:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:26,122 INFO L479 AbstractCegarLoop]: Abstraction has 12711 states and 21561 transitions. [2020-10-14 10:07:26,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 21561 transitions. [2020-10-14 10:07:26,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:07:26,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:26,132 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 10:07:26,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:07:26,132 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:26,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:26,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1872048342, now seen corresponding path program 3 times [2020-10-14 10:07:26,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:26,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496477684] [2020-10-14 10:07:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:26,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:26,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:26,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:26,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:31,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:31,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:07:31,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:31,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 10:07:31,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:31,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:31,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:31,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 10:07:31,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:07:31,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:31,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:31,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:31,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:31,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:31,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:31,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:31,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:31,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:07:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:07:31,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496477684] [2020-10-14 10:07:31,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:31,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:31,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856969721] [2020-10-14 10:07:31,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:31,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:31,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:31,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:31,261 INFO L87 Difference]: Start difference. First operand 12711 states and 21561 transitions. Second operand 5 states. [2020-10-14 10:07:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:32,357 INFO L93 Difference]: Finished difference Result 28147 states and 47079 transitions. [2020-10-14 10:07:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:32,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:07:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:32,374 INFO L225 Difference]: With dead ends: 28147 [2020-10-14 10:07:32,374 INFO L226 Difference]: Without dead ends: 15513 [2020-10-14 10:07:32,385 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 10:07:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15513 states. [2020-10-14 10:07:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15513 to 13255. [2020-10-14 10:07:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13255 states. [2020-10-14 10:07:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13255 states to 13255 states and 22585 transitions. [2020-10-14 10:07:32,642 INFO L78 Accepts]: Start accepts. Automaton has 13255 states and 22585 transitions. Word has length 185 [2020-10-14 10:07:32,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:32,642 INFO L479 AbstractCegarLoop]: Abstraction has 13255 states and 22585 transitions. [2020-10-14 10:07:32,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 13255 states and 22585 transitions. [2020-10-14 10:07:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:07:32,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:32,652 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 10:07:32,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:07:32,653 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:32,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:32,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1339074503, now seen corresponding path program 1 times [2020-10-14 10:07:32,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:32,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212914799] [2020-10-14 10:07:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:37,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:37,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:07:37,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:37,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4979 [2020-10-14 10:07:37,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:37,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 10:07:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:07:37,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:37,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:37,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:37,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:37,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:37,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:37,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:37,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:37,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:37,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:37,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:37,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:37,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:07:37,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212914799] [2020-10-14 10:07:37,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:37,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:37,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74893104] [2020-10-14 10:07:37,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:37,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:37,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:37,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:37,741 INFO L87 Difference]: Start difference. First operand 13255 states and 22585 transitions. Second operand 5 states. [2020-10-14 10:07:38,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:38,917 INFO L93 Difference]: Finished difference Result 21043 states and 35449 transitions. [2020-10-14 10:07:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:38,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:07:38,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:38,932 INFO L225 Difference]: With dead ends: 21043 [2020-10-14 10:07:38,932 INFO L226 Difference]: Without dead ends: 13961 [2020-10-14 10:07:38,940 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 10:07:38,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13961 states. [2020-10-14 10:07:39,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13961 to 13207. [2020-10-14 10:07:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13207 states. [2020-10-14 10:07:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13207 states to 13207 states and 22521 transitions. [2020-10-14 10:07:39,187 INFO L78 Accepts]: Start accepts. Automaton has 13207 states and 22521 transitions. Word has length 185 [2020-10-14 10:07:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:39,188 INFO L479 AbstractCegarLoop]: Abstraction has 13207 states and 22521 transitions. [2020-10-14 10:07:39,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13207 states and 22521 transitions. [2020-10-14 10:07:39,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:07:39,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:39,198 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 10:07:39,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:07:39,198 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:39,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1909294462, now seen corresponding path program 4 times [2020-10-14 10:07:39,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:39,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030428182] [2020-10-14 10:07:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:39,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:39,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:39,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:39,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:44,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:44,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:07:44,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:44,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 10:07:44,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:44,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 10:07:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:07:44,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:44,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:44,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:44,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:44,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:44,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:44,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:44,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:44,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:44,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:44,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:44,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:44,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 10:07:44,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030428182] [2020-10-14 10:07:44,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:44,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:44,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930466514] [2020-10-14 10:07:44,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:44,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:44,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:44,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:44,352 INFO L87 Difference]: Start difference. First operand 13207 states and 22521 transitions. Second operand 5 states. [2020-10-14 10:07:45,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:45,481 INFO L93 Difference]: Finished difference Result 29955 states and 50423 transitions. [2020-10-14 10:07:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:45,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:07:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:45,499 INFO L225 Difference]: With dead ends: 29955 [2020-10-14 10:07:45,499 INFO L226 Difference]: Without dead ends: 16825 [2020-10-14 10:07:45,510 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 10:07:45,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16825 states. [2020-10-14 10:07:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16825 to 14631. [2020-10-14 10:07:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14631 states. [2020-10-14 10:07:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14631 states to 14631 states and 25097 transitions. [2020-10-14 10:07:45,792 INFO L78 Accepts]: Start accepts. Automaton has 14631 states and 25097 transitions. Word has length 185 [2020-10-14 10:07:45,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:45,792 INFO L479 AbstractCegarLoop]: Abstraction has 14631 states and 25097 transitions. [2020-10-14 10:07:45,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:45,792 INFO L276 IsEmpty]: Start isEmpty. Operand 14631 states and 25097 transitions. [2020-10-14 10:07:45,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:07:45,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:45,802 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:45,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 10:07:45,803 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:45,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:45,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1858772545, now seen corresponding path program 1 times [2020-10-14 10:07:45,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:45,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078551972] [2020-10-14 10:07:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:45,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:45,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:46,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:50,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:50,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:07:50,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4398 [2020-10-14 10:07:50,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:50,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-14 10:07:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:07:50,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:50,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:50,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:50,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:50,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:50,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:50,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:50,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:50,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:50,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:50,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:50,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-14 10:07:50,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078551972] [2020-10-14 10:07:50,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:50,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:50,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382075535] [2020-10-14 10:07:50,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:50,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:50,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:50,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:50,324 INFO L87 Difference]: Start difference. First operand 14631 states and 25097 transitions. Second operand 5 states. [2020-10-14 10:07:51,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:51,531 INFO L93 Difference]: Finished difference Result 23001 states and 39086 transitions. [2020-10-14 10:07:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:51,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:07:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:51,547 INFO L225 Difference]: With dead ends: 23001 [2020-10-14 10:07:51,548 INFO L226 Difference]: Without dead ends: 15255 [2020-10-14 10:07:51,556 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 10:07:51,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15255 states. [2020-10-14 10:07:51,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15255 to 14567. [2020-10-14 10:07:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14567 states. [2020-10-14 10:07:51,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14567 states to 14567 states and 25017 transitions. [2020-10-14 10:07:51,828 INFO L78 Accepts]: Start accepts. Automaton has 14567 states and 25017 transitions. Word has length 185 [2020-10-14 10:07:51,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:51,828 INFO L479 AbstractCegarLoop]: Abstraction has 14567 states and 25017 transitions. [2020-10-14 10:07:51,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 14567 states and 25017 transitions. [2020-10-14 10:07:51,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:07:51,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:51,839 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:51,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 10:07:51,840 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:51,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:51,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1282788982, now seen corresponding path program 1 times [2020-10-14 10:07:51,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:51,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311498316] [2020-10-14 10:07:51,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:51,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:53,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:56,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:07:56,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 10:07:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:56,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:07:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:56,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:56,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:56,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:56,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:56,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:07:56,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:56,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:56,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:07:56,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311498316] [2020-10-14 10:07:56,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:56,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:56,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960849045] [2020-10-14 10:07:56,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:56,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:56,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:56,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:56,971 INFO L87 Difference]: Start difference. First operand 14567 states and 25017 transitions. Second operand 5 states. [2020-10-14 10:07:58,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:58,175 INFO L93 Difference]: Finished difference Result 31315 states and 52935 transitions. [2020-10-14 10:07:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:58,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:07:58,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:58,194 INFO L225 Difference]: With dead ends: 31315 [2020-10-14 10:07:58,194 INFO L226 Difference]: Without dead ends: 16825 [2020-10-14 10:07:58,207 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 10:07:58,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16825 states. [2020-10-14 10:07:58,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16825 to 13065. [2020-10-14 10:07:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13065 states. [2020-10-14 10:07:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13065 states to 13065 states and 22175 transitions. [2020-10-14 10:07:58,502 INFO L78 Accepts]: Start accepts. Automaton has 13065 states and 22175 transitions. Word has length 185 [2020-10-14 10:07:58,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:58,502 INFO L479 AbstractCegarLoop]: Abstraction has 13065 states and 22175 transitions. [2020-10-14 10:07:58,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:58,502 INFO L276 IsEmpty]: Start isEmpty. Operand 13065 states and 22175 transitions. [2020-10-14 10:07:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 10:07:58,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:58,511 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:58,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 10:07:58,511 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:58,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:58,512 INFO L82 PathProgramCache]: Analyzing trace with hash -219968507, now seen corresponding path program 1 times [2020-10-14 10:07:58,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:58,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651501082] [2020-10-14 10:07:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:58,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:58,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:59,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:03,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:03,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 10:08:03,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:03,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 10:08:03,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:03,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:08:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:08:03,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:03,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:03,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:03,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:03,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:03,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:03,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:03,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:03,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:03,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:03,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:03,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:03,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-14 10:08:03,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651501082] [2020-10-14 10:08:03,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:03,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:03,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687004138] [2020-10-14 10:08:03,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:03,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:03,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:03,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:03,634 INFO L87 Difference]: Start difference. First operand 13065 states and 22175 transitions. Second operand 5 states. [2020-10-14 10:08:04,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:04,699 INFO L93 Difference]: Finished difference Result 19981 states and 33787 transitions. [2020-10-14 10:08:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:04,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-14 10:08:04,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:04,712 INFO L225 Difference]: With dead ends: 19981 [2020-10-14 10:08:04,713 INFO L226 Difference]: Without dead ends: 13219 [2020-10-14 10:08:04,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 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 10:08:04,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2020-10-14 10:08:04,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 13065. [2020-10-14 10:08:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13065 states. [2020-10-14 10:08:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13065 states to 13065 states and 22173 transitions. [2020-10-14 10:08:04,991 INFO L78 Accepts]: Start accepts. Automaton has 13065 states and 22173 transitions. Word has length 186 [2020-10-14 10:08:04,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:04,991 INFO L479 AbstractCegarLoop]: Abstraction has 13065 states and 22173 transitions. [2020-10-14 10:08:04,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand 13065 states and 22173 transitions. [2020-10-14 10:08:05,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 10:08:05,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:05,001 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 10:08:05,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 10:08:05,001 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:05,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:05,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1863662703, now seen corresponding path program 1 times [2020-10-14 10:08:05,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:05,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101716226] [2020-10-14 10:08:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:05,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:05,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking...