/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.15.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:05:27,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:05:27,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:05:27,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:05:27,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:05:27,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:05:27,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:05:27,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:05:27,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:05:27,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:05:27,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:05:27,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:05:27,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:05:27,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:05:27,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:05:27,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:05:27,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:05:27,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:05:27,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:05:27,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:05:27,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:05:27,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:05:27,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:05:27,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:05:27,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:05:27,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:05:27,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:05:27,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:05:27,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:05:27,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:05:27,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:05:27,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:05:27,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:05:27,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:05:27,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:05:27,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:05:27,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:05:27,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:05:27,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:05:27,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:05:27,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:05:27,684 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 10:05:27,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:05:27,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:05:27,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:05:27,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:05:27,710 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:05:27,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:05:27,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:05:27,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:05:27,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:05:27,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:05:27,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:05:27,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:05:27,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:05:27,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:05:27,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:05:27,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:05:27,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:05:27,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:05:27,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:05:27,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:05:27,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:05:27,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:05:27,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:05:27,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:05:27,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:05:27,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:05:27,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:05:27,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:05:27,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:05:27,715 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 10:05:28,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:05:28,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:05:28,018 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:05:28,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:05:28,020 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:05:28,021 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.15.i.cil-2.c [2020-10-14 10:05:28,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef43883fd/0327b0bf77da43fb88a3d83aef5fe815/FLAGeb65349da [2020-10-14 10:05:28,833 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:05:28,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.15.i.cil-2.c [2020-10-14 10:05:28,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef43883fd/0327b0bf77da43fb88a3d83aef5fe815/FLAGeb65349da [2020-10-14 10:05:28,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef43883fd/0327b0bf77da43fb88a3d83aef5fe815 [2020-10-14 10:05:28,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:05:28,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:05:28,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:05:28,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:05:28,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:05:28,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:28" (1/1) ... [2020-10-14 10:05:28,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb1485c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:28, skipping insertion in model container [2020-10-14 10:05:28,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:28" (1/1) ... [2020-10-14 10:05:28,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:05:29,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:05:29,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:05:29,752 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:05:29,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:05:29,984 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:05:29,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:29 WrapperNode [2020-10-14 10:05:29,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:05:29,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:05:29,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:05:29,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:05:30,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:29" (1/1) ... [2020-10-14 10:05:30,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:29" (1/1) ... [2020-10-14 10:05:30,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:29" (1/1) ... [2020-10-14 10:05:30,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:29" (1/1) ... [2020-10-14 10:05:30,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:29" (1/1) ... [2020-10-14 10:05:30,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:29" (1/1) ... [2020-10-14 10:05:30,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:29" (1/1) ... [2020-10-14 10:05:30,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:05:30,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:05:30,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:05:30,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:05:30,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:29" (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 10:05:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:05:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:05:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:05:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:05:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:05:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:05:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:05:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:05:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:05:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:05:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:05:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:05:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:05:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:05:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:05:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:05:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:05:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:05:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:05:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:05:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:05:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:05:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:05:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:05:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:05:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:05:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:05:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:05:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:05:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:05:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:05:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:05:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:05:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:05:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:05:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:05:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:05:30,753 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:05:31,455 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:05:31,456 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:05:31,481 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:05:31,481 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:05:31,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:31 BoogieIcfgContainer [2020-10-14 10:05:31,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:05:31,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:05:31,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:05:31,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:05:31,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:05:28" (1/3) ... [2020-10-14 10:05:31,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3e72d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:31, skipping insertion in model container [2020-10-14 10:05:31,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:29" (2/3) ... [2020-10-14 10:05:31,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3e72d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:31, skipping insertion in model container [2020-10-14 10:05:31,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:31" (3/3) ... [2020-10-14 10:05:31,496 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.15.i.cil-2.c [2020-10-14 10:05:31,509 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:05:31,518 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:05:31,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:05:31,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:05:31,561 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:05:31,561 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:05:31,561 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:05:31,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:05:31,562 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:05:31,562 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:05:31,562 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:05:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-10-14 10:05:31,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 10:05:31,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:31,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:31,600 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:31,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:31,607 INFO L82 PathProgramCache]: Analyzing trace with hash -707159307, now seen corresponding path program 1 times [2020-10-14 10:05:31,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:31,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695091919] [2020-10-14 10:05:31,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:31,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:32,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:32,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:32,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:32,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 10:05:32,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:32,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-14 10:05:33,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:33,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:33,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:05:33,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:33,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:05:33,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 10:05:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:33,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:33,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:33,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:05:33,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:33,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:05:33,174 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 10:05:33,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695091919] [2020-10-14 10:05:33,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:33,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:05:33,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539892803] [2020-10-14 10:05:33,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:05:33,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:33,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:05:33,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:05:33,203 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2020-10-14 10:05:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:33,962 INFO L93 Difference]: Finished difference Result 448 states and 762 transitions. [2020-10-14 10:05:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:05:33,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 10:05:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:33,980 INFO L225 Difference]: With dead ends: 448 [2020-10-14 10:05:33,981 INFO L226 Difference]: Without dead ends: 274 [2020-10-14 10:05:33,985 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 10:05:34,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-14 10:05:34,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-14 10:05:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-14 10:05:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 411 transitions. [2020-10-14 10:05:34,051 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 411 transitions. Word has length 50 [2020-10-14 10:05:34,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:34,052 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 411 transitions. [2020-10-14 10:05:34,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:05:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 411 transitions. [2020-10-14 10:05:34,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 10:05:34,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:34,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:34,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:05:34,057 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:34,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:34,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1220871807, now seen corresponding path program 1 times [2020-10-14 10:05:34,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:34,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371005892] [2020-10-14 10:05:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:35,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:35,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 10:05:35,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:35,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-10-14 10:05:35,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:35,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:05:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:05:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:05:35,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:35,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:35,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:35,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:35,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:35,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:05:35,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:35,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:35,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:35,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:35,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:05:35,160 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 10:05:35,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371005892] [2020-10-14 10:05:35,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:35,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:05:35,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822953150] [2020-10-14 10:05:35,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:05:35,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:35,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:05:35,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:05:35,181 INFO L87 Difference]: Start difference. First operand 274 states and 411 transitions. Second operand 4 states. [2020-10-14 10:05:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:35,779 INFO L93 Difference]: Finished difference Result 534 states and 818 transitions. [2020-10-14 10:05:35,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:05:35,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 10:05:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:35,785 INFO L225 Difference]: With dead ends: 534 [2020-10-14 10:05:35,785 INFO L226 Difference]: Without dead ends: 403 [2020-10-14 10:05:35,790 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 10:05:35,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-14 10:05:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-10-14 10:05:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-14 10:05:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 602 transitions. [2020-10-14 10:05:35,829 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 602 transitions. Word has length 67 [2020-10-14 10:05:35,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:35,830 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 602 transitions. [2020-10-14 10:05:35,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:05:35,830 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 602 transitions. [2020-10-14 10:05:35,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 10:05:35,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:35,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:35,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:05:35,836 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:35,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:35,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1874706857, now seen corresponding path program 1 times [2020-10-14 10:05:35,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:35,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087727252] [2020-10-14 10:05:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:35,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:36,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:36,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:36,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 10:05:36,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:36,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-14 10:05:36,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:36,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:05:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:05:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:05:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:36,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:36,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:36,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:36,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:05:36,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:36,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:36,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:36,646 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 10:05:36,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087727252] [2020-10-14 10:05:36,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:36,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:05:36,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615360729] [2020-10-14 10:05:36,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:05:36,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:36,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:05:36,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:05:36,649 INFO L87 Difference]: Start difference. First operand 403 states and 602 transitions. Second operand 4 states. [2020-10-14 10:05:37,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:37,175 INFO L93 Difference]: Finished difference Result 792 states and 1200 transitions. [2020-10-14 10:05:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:05:37,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-14 10:05:37,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:37,179 INFO L225 Difference]: With dead ends: 792 [2020-10-14 10:05:37,179 INFO L226 Difference]: Without dead ends: 532 [2020-10-14 10:05:37,180 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 10:05:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-10-14 10:05:37,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2020-10-14 10:05:37,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-10-14 10:05:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 794 transitions. [2020-10-14 10:05:37,202 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 794 transitions. Word has length 89 [2020-10-14 10:05:37,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:37,202 INFO L479 AbstractCegarLoop]: Abstraction has 532 states and 794 transitions. [2020-10-14 10:05:37,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:05:37,203 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 794 transitions. [2020-10-14 10:05:37,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 10:05:37,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:37,208 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, 1, 1, 1] [2020-10-14 10:05:37,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:05:37,209 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:37,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:37,209 INFO L82 PathProgramCache]: Analyzing trace with hash -232991733, now seen corresponding path program 1 times [2020-10-14 10:05:37,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:37,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881806176] [2020-10-14 10:05:37,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:37,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:37,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:37,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:37,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 10:05:37,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-14 10:05:37,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:37,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:05:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 10:05:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:05:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:38,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:38,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:38,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:38,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:38,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:38,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:05:38,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:38,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:38,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:38,063 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 10:05:38,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881806176] [2020-10-14 10:05:38,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:38,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:05:38,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759397480] [2020-10-14 10:05:38,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:05:38,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:38,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:05:38,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:05:38,066 INFO L87 Difference]: Start difference. First operand 532 states and 794 transitions. Second operand 4 states. [2020-10-14 10:05:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:38,557 INFO L93 Difference]: Finished difference Result 1050 states and 1584 transitions. [2020-10-14 10:05:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:05:38,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-14 10:05:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:38,562 INFO L225 Difference]: With dead ends: 1050 [2020-10-14 10:05:38,563 INFO L226 Difference]: Without dead ends: 661 [2020-10-14 10:05:38,564 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 10:05:38,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-10-14 10:05:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2020-10-14 10:05:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-10-14 10:05:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 987 transitions. [2020-10-14 10:05:38,584 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 987 transitions. Word has length 130 [2020-10-14 10:05:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:38,585 INFO L479 AbstractCegarLoop]: Abstraction has 661 states and 987 transitions. [2020-10-14 10:05:38,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:05:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 987 transitions. [2020-10-14 10:05:38,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 10:05:38,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:38,588 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, 1, 1, 1] [2020-10-14 10:05:38,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:05:38,589 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:38,589 INFO L82 PathProgramCache]: Analyzing trace with hash -185140501, now seen corresponding path program 1 times [2020-10-14 10:05:38,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:38,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9377186] [2020-10-14 10:05:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:38,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:43,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:43,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 10:05:43,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:43,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 10:05:43,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:43,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:43,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:05:43,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-14 10:05:43,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:05:43,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 10:05:43,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:43,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:43,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:43,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:43,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:43,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:05:43,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:43,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:43,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:05:43,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9377186] [2020-10-14 10:05:43,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:43,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:05:43,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731972833] [2020-10-14 10:05:43,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:05:43,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:43,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:05:43,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:05:43,874 INFO L87 Difference]: Start difference. First operand 661 states and 987 transitions. Second operand 4 states. [2020-10-14 10:05:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:44,377 INFO L93 Difference]: Finished difference Result 1308 states and 1970 transitions. [2020-10-14 10:05:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:05:44,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-14 10:05:44,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:44,384 INFO L225 Difference]: With dead ends: 1308 [2020-10-14 10:05:44,384 INFO L226 Difference]: Without dead ends: 790 [2020-10-14 10:05:44,386 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 10:05:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2020-10-14 10:05:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2020-10-14 10:05:44,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-10-14 10:05:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1181 transitions. [2020-10-14 10:05:44,409 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1181 transitions. Word has length 173 [2020-10-14 10:05:44,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:44,410 INFO L479 AbstractCegarLoop]: Abstraction has 790 states and 1181 transitions. [2020-10-14 10:05:44,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:05:44,411 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1181 transitions. [2020-10-14 10:05:44,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 10:05:44,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:44,414 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:44,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:05:44,415 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:44,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:44,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1315874996, now seen corresponding path program 1 times [2020-10-14 10:05:44,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:44,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924201375] [2020-10-14 10:05:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:44,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:44,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:49,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:49,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 10:05:49,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:49,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 10:05:49,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:49,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:05:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-14 10:05:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:05:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:49,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:49,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:49,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:49,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:49,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:05:49,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:49,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:49,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:49,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:49,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 10:05:49,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924201375] [2020-10-14 10:05:49,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:49,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:05:49,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480443775] [2020-10-14 10:05:49,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:05:49,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:49,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:05:49,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:05:49,633 INFO L87 Difference]: Start difference. First operand 790 states and 1181 transitions. Second operand 4 states. [2020-10-14 10:05:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:50,231 INFO L93 Difference]: Finished difference Result 1566 states and 2358 transitions. [2020-10-14 10:05:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:05:50,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2020-10-14 10:05:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:50,239 INFO L225 Difference]: With dead ends: 1566 [2020-10-14 10:05:50,240 INFO L226 Difference]: Without dead ends: 919 [2020-10-14 10:05:50,242 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 10:05:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2020-10-14 10:05:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2020-10-14 10:05:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-10-14 10:05:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1376 transitions. [2020-10-14 10:05:50,282 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1376 transitions. Word has length 212 [2020-10-14 10:05:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:50,283 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1376 transitions. [2020-10-14 10:05:50,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:05:50,283 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1376 transitions. [2020-10-14 10:05:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 10:05:50,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:50,292 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:50,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:05:50,292 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:50,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:50,293 INFO L82 PathProgramCache]: Analyzing trace with hash -16419912, now seen corresponding path program 1 times [2020-10-14 10:05:50,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:50,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605212967] [2020-10-14 10:05:50,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:50,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:51,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:55,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:55,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 10:05:55,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:55,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 10:05:55,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:55,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-14 10:05:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:05:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:55,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:55,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:55,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:55,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:05:55,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:55,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:55,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:55,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 10:05:55,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605212967] [2020-10-14 10:05:55,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:55,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:55,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974464364] [2020-10-14 10:05:55,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:55,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:55,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:55,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:55,659 INFO L87 Difference]: Start difference. First operand 919 states and 1376 transitions. Second operand 5 states. [2020-10-14 10:05:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:56,873 INFO L93 Difference]: Finished difference Result 2575 states and 3875 transitions. [2020-10-14 10:05:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:56,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-14 10:05:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:56,884 INFO L225 Difference]: With dead ends: 2575 [2020-10-14 10:05:56,885 INFO L226 Difference]: Without dead ends: 1670 [2020-10-14 10:05:56,887 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 10:05:56,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2020-10-14 10:05:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1213. [2020-10-14 10:05:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-14 10:05:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1915 transitions. [2020-10-14 10:05:56,936 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1915 transitions. Word has length 254 [2020-10-14 10:05:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:56,936 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1915 transitions. [2020-10-14 10:05:56,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:56,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1915 transitions. [2020-10-14 10:05:56,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 10:05:56,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:56,943 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:56,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:05:56,944 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:56,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:56,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1895550858, now seen corresponding path program 1 times [2020-10-14 10:05:56,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:56,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718760407] [2020-10-14 10:05:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:57,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:57,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:02,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:02,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 10:06:02,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:02,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 10:06:02,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:02,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:02,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:02,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:06:02,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:06:02,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:02,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:02,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:02,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:02,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:02,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:02,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:06:02,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:02,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:02,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:02,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:06:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:06:02,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718760407] [2020-10-14 10:06:02,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:02,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:02,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549771369] [2020-10-14 10:06:02,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:02,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:02,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:02,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:02,342 INFO L87 Difference]: Start difference. First operand 1213 states and 1915 transitions. Second operand 5 states. [2020-10-14 10:06:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:03,473 INFO L93 Difference]: Finished difference Result 3156 states and 4946 transitions. [2020-10-14 10:06:03,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:03,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-14 10:06:03,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:03,485 INFO L225 Difference]: With dead ends: 3156 [2020-10-14 10:06:03,486 INFO L226 Difference]: Without dead ends: 1957 [2020-10-14 10:06:03,489 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 10:06:03,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2020-10-14 10:06:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1486. [2020-10-14 10:06:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1486 states. [2020-10-14 10:06:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2419 transitions. [2020-10-14 10:06:03,572 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2419 transitions. Word has length 254 [2020-10-14 10:06:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:03,572 INFO L479 AbstractCegarLoop]: Abstraction has 1486 states and 2419 transitions. [2020-10-14 10:06:03,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2419 transitions. [2020-10-14 10:06:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-14 10:06:03,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:03,578 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:03,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:06:03,579 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:03,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1017272018, now seen corresponding path program 1 times [2020-10-14 10:06:03,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:03,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287195992] [2020-10-14 10:06:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:03,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:04,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:08,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:08,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 10:06:08,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 10:06:08,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:08,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:08,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:08,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:06:08,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:06:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:08,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:08,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:08,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:08,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:08,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:08,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:06:08,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:08,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:08,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:08,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:08,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:06:08,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287195992] [2020-10-14 10:06:08,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:08,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:08,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843786842] [2020-10-14 10:06:08,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:08,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:08,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:08,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:08,931 INFO L87 Difference]: Start difference. First operand 1486 states and 2419 transitions. Second operand 5 states. [2020-10-14 10:06:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:10,128 INFO L93 Difference]: Finished difference Result 3378 states and 5380 transitions. [2020-10-14 10:06:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:10,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-14 10:06:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:10,138 INFO L225 Difference]: With dead ends: 3378 [2020-10-14 10:06:10,139 INFO L226 Difference]: Without dead ends: 1906 [2020-10-14 10:06:10,142 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 10:06:10,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2020-10-14 10:06:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1493. [2020-10-14 10:06:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1493 states. [2020-10-14 10:06:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2426 transitions. [2020-10-14 10:06:10,194 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2426 transitions. Word has length 255 [2020-10-14 10:06:10,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:10,195 INFO L479 AbstractCegarLoop]: Abstraction has 1493 states and 2426 transitions. [2020-10-14 10:06:10,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2426 transitions. [2020-10-14 10:06:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-14 10:06:10,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:10,201 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:10,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:06:10,202 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:10,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:10,202 INFO L82 PathProgramCache]: Analyzing trace with hash 666411349, now seen corresponding path program 1 times [2020-10-14 10:06:10,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:10,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907789563] [2020-10-14 10:06:10,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:10,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:10,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:15,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:15,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 10:06:15,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 10:06:15,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:15,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:06:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:06:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:15,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:15,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:15,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:15,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:06:15,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:15,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:15,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:15,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:15,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:06:15,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907789563] [2020-10-14 10:06:15,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:15,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:15,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040407914] [2020-10-14 10:06:15,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:15,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:15,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:15,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:15,437 INFO L87 Difference]: Start difference. First operand 1493 states and 2426 transitions. Second operand 5 states. [2020-10-14 10:06:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:16,460 INFO L93 Difference]: Finished difference Result 3385 states and 5380 transitions. [2020-10-14 10:06:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:16,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2020-10-14 10:06:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:16,476 INFO L225 Difference]: With dead ends: 3385 [2020-10-14 10:06:16,476 INFO L226 Difference]: Without dead ends: 1906 [2020-10-14 10:06:16,481 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 10:06:16,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2020-10-14 10:06:16,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1493. [2020-10-14 10:06:16,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1493 states. [2020-10-14 10:06:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2419 transitions. [2020-10-14 10:06:16,544 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2419 transitions. Word has length 267 [2020-10-14 10:06:16,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:16,544 INFO L479 AbstractCegarLoop]: Abstraction has 1493 states and 2419 transitions. [2020-10-14 10:06:16,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:16,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2419 transitions. [2020-10-14 10:06:16,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-14 10:06:16,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:16,552 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:16,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:06:16,553 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:16,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:16,553 INFO L82 PathProgramCache]: Analyzing trace with hash 364437415, now seen corresponding path program 1 times [2020-10-14 10:06:16,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:16,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834636749] [2020-10-14 10:06:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:16,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:16,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:16,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:17,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:21,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:21,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-14 10:06:21,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:21,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 10:06:21,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:21,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 235 [2020-10-14 10:06:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:06:21,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:21,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:21,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:21,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:21,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:06:21,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:21,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:21,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-10-14 10:06:21,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834636749] [2020-10-14 10:06:21,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:21,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:21,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882564928] [2020-10-14 10:06:21,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:21,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:21,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:21,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:21,753 INFO L87 Difference]: Start difference. First operand 1493 states and 2419 transitions. Second operand 5 states. [2020-10-14 10:06:22,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:22,476 INFO L93 Difference]: Finished difference Result 3175 states and 5122 transitions. [2020-10-14 10:06:22,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:22,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-14 10:06:22,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:22,485 INFO L225 Difference]: With dead ends: 3175 [2020-10-14 10:06:22,486 INFO L226 Difference]: Without dead ends: 1696 [2020-10-14 10:06:22,492 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 10:06:22,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2020-10-14 10:06:22,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1605. [2020-10-14 10:06:22,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:06:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2601 transitions. [2020-10-14 10:06:22,551 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2601 transitions. Word has length 268 [2020-10-14 10:06:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:22,551 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2601 transitions. [2020-10-14 10:06:22,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2601 transitions. [2020-10-14 10:06:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-14 10:06:22,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:22,559 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:22,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:06:22,559 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:22,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1301070270, now seen corresponding path program 1 times [2020-10-14 10:06:22,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:22,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309078604] [2020-10-14 10:06:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:22,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:27,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:27,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-14 10:06:27,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 10:06:27,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:27,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:06:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 10:06:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:27,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:27,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:27,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:27,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:27,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:27,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:06:27,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309078604] [2020-10-14 10:06:27,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:27,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:27,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177886720] [2020-10-14 10:06:27,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:27,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:27,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:27,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:27,830 INFO L87 Difference]: Start difference. First operand 1605 states and 2601 transitions. Second operand 5 states. [2020-10-14 10:06:28,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:28,756 INFO L93 Difference]: Finished difference Result 3595 states and 5716 transitions. [2020-10-14 10:06:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:28,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-14 10:06:28,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:28,766 INFO L225 Difference]: With dead ends: 3595 [2020-10-14 10:06:28,766 INFO L226 Difference]: Without dead ends: 2004 [2020-10-14 10:06:28,770 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 10:06:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-10-14 10:06:28,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1605. [2020-10-14 10:06:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:06:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2594 transitions. [2020-10-14 10:06:28,822 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2594 transitions. Word has length 268 [2020-10-14 10:06:28,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:28,822 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2594 transitions. [2020-10-14 10:06:28,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:28,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2594 transitions. [2020-10-14 10:06:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-14 10:06:28,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:28,828 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:28,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:06:28,829 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:28,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:28,829 INFO L82 PathProgramCache]: Analyzing trace with hash -899536995, now seen corresponding path program 1 times [2020-10-14 10:06:28,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:28,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967417876] [2020-10-14 10:06:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:28,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:29,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:29,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:29,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:33,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-14 10:06:33,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:33,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 10:06:33,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:33,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:33,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:06:33,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:06:33,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:33,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:33,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:33,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:33,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:33,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:33,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:33,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:33,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:33,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:33,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:06:34,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967417876] [2020-10-14 10:06:34,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:34,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:34,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840167182] [2020-10-14 10:06:34,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:34,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:34,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:34,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:34,028 INFO L87 Difference]: Start difference. First operand 1605 states and 2594 transitions. Second operand 5 states. [2020-10-14 10:06:34,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:34,906 INFO L93 Difference]: Finished difference Result 3588 states and 5695 transitions. [2020-10-14 10:06:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:34,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-14 10:06:34,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:34,916 INFO L225 Difference]: With dead ends: 3588 [2020-10-14 10:06:34,916 INFO L226 Difference]: Without dead ends: 1997 [2020-10-14 10:06:34,922 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 10:06:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2020-10-14 10:06:34,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1605. [2020-10-14 10:06:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:06:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2587 transitions. [2020-10-14 10:06:34,982 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2587 transitions. Word has length 268 [2020-10-14 10:06:34,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:34,983 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2587 transitions. [2020-10-14 10:06:34,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:34,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2587 transitions. [2020-10-14 10:06:34,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 10:06:34,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:34,988 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:34,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:06:34,989 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:34,989 INFO L82 PathProgramCache]: Analyzing trace with hash -37588122, now seen corresponding path program 1 times [2020-10-14 10:06:34,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:34,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766938770] [2020-10-14 10:06:34,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:40,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:40,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 10:06:40,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 10:06:40,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:40,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:06:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:06:40,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:40,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:40,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:40,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:40,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:40,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:40,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:06:40,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766938770] [2020-10-14 10:06:40,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:40,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:40,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765030185] [2020-10-14 10:06:40,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:40,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:40,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:40,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:40,163 INFO L87 Difference]: Start difference. First operand 1605 states and 2587 transitions. Second operand 5 states. [2020-10-14 10:06:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:41,075 INFO L93 Difference]: Finished difference Result 3581 states and 5674 transitions. [2020-10-14 10:06:41,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:41,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-14 10:06:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:41,084 INFO L225 Difference]: With dead ends: 3581 [2020-10-14 10:06:41,084 INFO L226 Difference]: Without dead ends: 1990 [2020-10-14 10:06:41,087 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 10:06:41,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2020-10-14 10:06:41,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1605. [2020-10-14 10:06:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:06:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2580 transitions. [2020-10-14 10:06:41,137 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2580 transitions. Word has length 269 [2020-10-14 10:06:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:41,138 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2580 transitions. [2020-10-14 10:06:41,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:41,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2580 transitions. [2020-10-14 10:06:41,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 10:06:41,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:41,144 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:41,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:06:41,145 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:41,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:41,145 INFO L82 PathProgramCache]: Analyzing trace with hash 800422650, now seen corresponding path program 1 times [2020-10-14 10:06:41,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:41,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413814804] [2020-10-14 10:06:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:41,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:46,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 10:06:46,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 10:06:46,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:46,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:06:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:06:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:46,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:46,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:46,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:46,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:46,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:46,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:46,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:46,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:06:46,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413814804] [2020-10-14 10:06:46,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:46,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:46,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877498821] [2020-10-14 10:06:46,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:46,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:46,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:46,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:46,402 INFO L87 Difference]: Start difference. First operand 1605 states and 2580 transitions. Second operand 5 states. [2020-10-14 10:06:47,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:47,359 INFO L93 Difference]: Finished difference Result 3581 states and 5660 transitions. [2020-10-14 10:06:47,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:47,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-14 10:06:47,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:47,371 INFO L225 Difference]: With dead ends: 3581 [2020-10-14 10:06:47,371 INFO L226 Difference]: Without dead ends: 1990 [2020-10-14 10:06:47,377 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 10:06:47,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2020-10-14 10:06:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1605. [2020-10-14 10:06:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:06:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2573 transitions. [2020-10-14 10:06:47,433 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2573 transitions. Word has length 269 [2020-10-14 10:06:47,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:47,434 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2573 transitions. [2020-10-14 10:06:47,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2573 transitions. [2020-10-14 10:06:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 10:06:47,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:47,439 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:47,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:06:47,439 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:47,440 INFO L82 PathProgramCache]: Analyzing trace with hash 540126179, now seen corresponding path program 1 times [2020-10-14 10:06:47,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:47,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134452219] [2020-10-14 10:06:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:47,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:52,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:52,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 10:06:52,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:52,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 10:06:52,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:52,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:06:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:06:52,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:52,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:52,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:52,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:52,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:06:52,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:52,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:52,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:06:52,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134452219] [2020-10-14 10:06:52,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:52,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:52,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359604204] [2020-10-14 10:06:52,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:52,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:52,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:52,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:52,662 INFO L87 Difference]: Start difference. First operand 1605 states and 2573 transitions. Second operand 5 states. [2020-10-14 10:06:53,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:53,556 INFO L93 Difference]: Finished difference Result 3581 states and 5646 transitions. [2020-10-14 10:06:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:53,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-14 10:06:53,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:53,567 INFO L225 Difference]: With dead ends: 3581 [2020-10-14 10:06:53,567 INFO L226 Difference]: Without dead ends: 1990 [2020-10-14 10:06:53,571 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 10:06:53,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2020-10-14 10:06:53,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1605. [2020-10-14 10:06:53,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:06:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2566 transitions. [2020-10-14 10:06:53,615 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2566 transitions. Word has length 270 [2020-10-14 10:06:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:53,616 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2566 transitions. [2020-10-14 10:06:53,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2566 transitions. [2020-10-14 10:06:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-14 10:06:53,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:53,620 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:53,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:06:53,620 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:53,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:53,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1022073375, now seen corresponding path program 1 times [2020-10-14 10:06:53,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:53,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25529646] [2020-10-14 10:06:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:53,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:54,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:58,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:58,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 10:06:58,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 10:06:58,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:58,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:06:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:06:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:58,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:58,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:58,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:58,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:58,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:58,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:58,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:06:58,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25529646] [2020-10-14 10:06:58,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:58,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:58,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130392955] [2020-10-14 10:06:58,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:58,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:58,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:58,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:58,849 INFO L87 Difference]: Start difference. First operand 1605 states and 2566 transitions. Second operand 5 states. [2020-10-14 10:06:59,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:59,744 INFO L93 Difference]: Finished difference Result 3581 states and 5632 transitions. [2020-10-14 10:06:59,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:59,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2020-10-14 10:06:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:59,756 INFO L225 Difference]: With dead ends: 3581 [2020-10-14 10:06:59,756 INFO L226 Difference]: Without dead ends: 1990 [2020-10-14 10:06:59,760 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 10:06:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2020-10-14 10:06:59,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1605. [2020-10-14 10:06:59,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:06:59,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2559 transitions. [2020-10-14 10:06:59,805 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2559 transitions. Word has length 271 [2020-10-14 10:06:59,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:59,806 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2559 transitions. [2020-10-14 10:06:59,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:59,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2559 transitions. [2020-10-14 10:06:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-14 10:06:59,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:59,811 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:59,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:06:59,811 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:59,812 INFO L82 PathProgramCache]: Analyzing trace with hash -842764964, now seen corresponding path program 1 times [2020-10-14 10:06:59,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:59,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641677640] [2020-10-14 10:06:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:00,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:00,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:04,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:04,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 10:07:04,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:04,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 10:07:04,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:04,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:07:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:07:04,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:04,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:04,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:04,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:04,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:07:04,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:04,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:07:05,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641677640] [2020-10-14 10:07:05,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:05,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:05,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57375686] [2020-10-14 10:07:05,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:05,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:05,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:05,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:05,009 INFO L87 Difference]: Start difference. First operand 1605 states and 2559 transitions. Second operand 5 states. [2020-10-14 10:07:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:05,910 INFO L93 Difference]: Finished difference Result 3581 states and 5618 transitions. [2020-10-14 10:07:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:05,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2020-10-14 10:07:05,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:05,918 INFO L225 Difference]: With dead ends: 3581 [2020-10-14 10:07:05,918 INFO L226 Difference]: Without dead ends: 1990 [2020-10-14 10:07:05,922 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 10:07:05,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2020-10-14 10:07:05,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1605. [2020-10-14 10:07:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:07:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2552 transitions. [2020-10-14 10:07:05,976 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2552 transitions. Word has length 271 [2020-10-14 10:07:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:05,977 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2552 transitions. [2020-10-14 10:07:05,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2552 transitions. [2020-10-14 10:07:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 10:07:05,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:05,982 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:05,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:07:05,983 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:05,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:05,983 INFO L82 PathProgramCache]: Analyzing trace with hash 627560640, now seen corresponding path program 1 times [2020-10-14 10:07:05,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:05,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190054540] [2020-10-14 10:07:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:11,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:11,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-14 10:07:11,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 10:07:11,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:11,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:07:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 10:07:11,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:07:11,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:11,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:11,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:11,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:11,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:07:11,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:11,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:07:11,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190054540] [2020-10-14 10:07:11,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:11,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:11,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333120529] [2020-10-14 10:07:11,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:11,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:11,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:11,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:11,244 INFO L87 Difference]: Start difference. First operand 1605 states and 2552 transitions. Second operand 5 states. [2020-10-14 10:07:12,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:12,165 INFO L93 Difference]: Finished difference Result 3581 states and 5604 transitions. [2020-10-14 10:07:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:12,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-14 10:07:12,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:12,172 INFO L225 Difference]: With dead ends: 3581 [2020-10-14 10:07:12,172 INFO L226 Difference]: Without dead ends: 1990 [2020-10-14 10:07:12,175 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 10:07:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2020-10-14 10:07:12,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1605. [2020-10-14 10:07:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:07:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2545 transitions. [2020-10-14 10:07:12,222 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2545 transitions. Word has length 272 [2020-10-14 10:07:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:12,222 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2545 transitions. [2020-10-14 10:07:12,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2545 transitions. [2020-10-14 10:07:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 10:07:12,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:12,227 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:12,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:07:12,227 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:12,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:12,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1256229528, now seen corresponding path program 1 times [2020-10-14 10:07:12,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:12,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837676506] [2020-10-14 10:07:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:12,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:12,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:12,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:17,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:17,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-14 10:07:17,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 10:07:17,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:17,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:07:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:07:17,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:17,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:17,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:17,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:17,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:17,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:17,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:17,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:17,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:07:17,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837676506] [2020-10-14 10:07:17,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:17,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:17,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501631761] [2020-10-14 10:07:17,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:17,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:17,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:17,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:17,407 INFO L87 Difference]: Start difference. First operand 1605 states and 2545 transitions. Second operand 5 states. [2020-10-14 10:07:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:18,250 INFO L93 Difference]: Finished difference Result 3511 states and 5499 transitions. [2020-10-14 10:07:18,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:18,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-14 10:07:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:18,258 INFO L225 Difference]: With dead ends: 3511 [2020-10-14 10:07:18,258 INFO L226 Difference]: Without dead ends: 1920 [2020-10-14 10:07:18,262 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 10:07:18,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2020-10-14 10:07:18,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1605. [2020-10-14 10:07:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:07:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2538 transitions. [2020-10-14 10:07:18,308 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2538 transitions. Word has length 272 [2020-10-14 10:07:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:18,308 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2538 transitions. [2020-10-14 10:07:18,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2538 transitions. [2020-10-14 10:07:18,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 10:07:18,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:18,313 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:18,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:07:18,313 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:18,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:18,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1865488201, now seen corresponding path program 1 times [2020-10-14 10:07:18,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:18,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105354225] [2020-10-14 10:07:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:18,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:18,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:23,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:23,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 10:07:23,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:23,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 10:07:23,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:23,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:07:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:07:23,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:23,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:23,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:23,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:23,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:23,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:23,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:23,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:23,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:07:23,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105354225] [2020-10-14 10:07:23,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:23,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:23,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128988330] [2020-10-14 10:07:23,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:23,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:23,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:23,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:23,534 INFO L87 Difference]: Start difference. First operand 1605 states and 2538 transitions. Second operand 5 states. [2020-10-14 10:07:24,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:24,337 INFO L93 Difference]: Finished difference Result 3490 states and 5457 transitions. [2020-10-14 10:07:24,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:24,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-10-14 10:07:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:24,344 INFO L225 Difference]: With dead ends: 3490 [2020-10-14 10:07:24,344 INFO L226 Difference]: Without dead ends: 1899 [2020-10-14 10:07:24,347 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 10:07:24,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-10-14 10:07:24,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1605. [2020-10-14 10:07:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:07:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2531 transitions. [2020-10-14 10:07:24,394 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2531 transitions. Word has length 273 [2020-10-14 10:07:24,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:24,394 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2531 transitions. [2020-10-14 10:07:24,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2531 transitions. [2020-10-14 10:07:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-14 10:07:24,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:24,399 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:24,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:07:24,399 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:24,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:24,400 INFO L82 PathProgramCache]: Analyzing trace with hash 444618700, now seen corresponding path program 1 times [2020-10-14 10:07:24,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:24,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859378169] [2020-10-14 10:07:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:24,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:29,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:29,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 10:07:29,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:29,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 10:07:29,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:29,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:07:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:07:29,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:29,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:29,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:29,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:29,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:07:29,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:29,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:29,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:07:29,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859378169] [2020-10-14 10:07:29,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:29,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:29,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477999988] [2020-10-14 10:07:29,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:29,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:29,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:29,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:29,618 INFO L87 Difference]: Start difference. First operand 1605 states and 2531 transitions. Second operand 5 states. [2020-10-14 10:07:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:30,443 INFO L93 Difference]: Finished difference Result 3490 states and 5443 transitions. [2020-10-14 10:07:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:30,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 276 [2020-10-14 10:07:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:30,450 INFO L225 Difference]: With dead ends: 3490 [2020-10-14 10:07:30,450 INFO L226 Difference]: Without dead ends: 1899 [2020-10-14 10:07:30,454 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 10:07:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-10-14 10:07:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1605. [2020-10-14 10:07:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:07:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2524 transitions. [2020-10-14 10:07:30,501 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2524 transitions. Word has length 276 [2020-10-14 10:07:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:30,502 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2524 transitions. [2020-10-14 10:07:30,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2524 transitions. [2020-10-14 10:07:30,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-14 10:07:30,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:30,507 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:30,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:07:30,508 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:30,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:30,508 INFO L82 PathProgramCache]: Analyzing trace with hash -2015917062, now seen corresponding path program 1 times [2020-10-14 10:07:30,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:30,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16054992] [2020-10-14 10:07:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:30,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:30,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:30,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:35,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:35,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 10:07:35,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 10:07:35,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:35,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:07:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:07:35,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:35,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:35,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:35,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:35,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:35,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:07:35,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:35,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:35,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:07:35,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16054992] [2020-10-14 10:07:35,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:35,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:35,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071229309] [2020-10-14 10:07:35,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:35,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:35,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:35,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:35,718 INFO L87 Difference]: Start difference. First operand 1605 states and 2524 transitions. Second operand 5 states. [2020-10-14 10:07:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:36,573 INFO L93 Difference]: Finished difference Result 3490 states and 5429 transitions. [2020-10-14 10:07:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:36,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 276 [2020-10-14 10:07:36,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:36,580 INFO L225 Difference]: With dead ends: 3490 [2020-10-14 10:07:36,580 INFO L226 Difference]: Without dead ends: 1899 [2020-10-14 10:07:36,583 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 10:07:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-10-14 10:07:36,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1605. [2020-10-14 10:07:36,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:07:36,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2517 transitions. [2020-10-14 10:07:36,631 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2517 transitions. Word has length 276 [2020-10-14 10:07:36,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:36,632 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2517 transitions. [2020-10-14 10:07:36,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:36,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2517 transitions. [2020-10-14 10:07:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 10:07:36,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:36,637 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:36,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:07:36,637 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:36,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:36,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1227546717, now seen corresponding path program 1 times [2020-10-14 10:07:36,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:36,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205985000] [2020-10-14 10:07:36,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:36,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:37,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:37,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:41,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:41,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-14 10:07:41,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:41,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:07:41,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:41,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:07:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 10:07:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:41,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:41,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:41,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:41,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:41,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:07:41,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:41,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:41,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:07:41,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205985000] [2020-10-14 10:07:41,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:41,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:41,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309532928] [2020-10-14 10:07:41,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:41,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:41,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:41,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:41,807 INFO L87 Difference]: Start difference. First operand 1605 states and 2517 transitions. Second operand 5 states. [2020-10-14 10:07:42,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:42,622 INFO L93 Difference]: Finished difference Result 3462 states and 5374 transitions. [2020-10-14 10:07:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:42,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2020-10-14 10:07:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:42,626 INFO L225 Difference]: With dead ends: 3462 [2020-10-14 10:07:42,626 INFO L226 Difference]: Without dead ends: 1871 [2020-10-14 10:07:42,629 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 10:07:42,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2020-10-14 10:07:42,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1605. [2020-10-14 10:07:42,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:07:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2510 transitions. [2020-10-14 10:07:42,672 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2510 transitions. Word has length 277 [2020-10-14 10:07:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:42,673 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2510 transitions. [2020-10-14 10:07:42,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2510 transitions. [2020-10-14 10:07:42,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 10:07:42,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:42,677 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:42,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:07:42,678 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:42,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:42,678 INFO L82 PathProgramCache]: Analyzing trace with hash -135385295, now seen corresponding path program 1 times [2020-10-14 10:07:42,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:42,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228564924] [2020-10-14 10:07:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:42,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:42,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:47,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:47,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-14 10:07:47,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:47,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:07:47,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:47,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:47,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:47,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:07:47,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:07:47,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:47,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:47,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:47,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:47,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:07:47,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:47,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:47,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:07:47,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228564924] [2020-10-14 10:07:47,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:47,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:47,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835596184] [2020-10-14 10:07:47,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:47,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:47,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:47,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:47,836 INFO L87 Difference]: Start difference. First operand 1605 states and 2510 transitions. Second operand 5 states. [2020-10-14 10:07:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:48,638 INFO L93 Difference]: Finished difference Result 3434 states and 5325 transitions. [2020-10-14 10:07:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:48,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2020-10-14 10:07:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:48,643 INFO L225 Difference]: With dead ends: 3434 [2020-10-14 10:07:48,643 INFO L226 Difference]: Without dead ends: 1843 [2020-10-14 10:07:48,646 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 10:07:48,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-10-14 10:07:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1605. [2020-10-14 10:07:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:07:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2503 transitions. [2020-10-14 10:07:48,692 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2503 transitions. Word has length 277 [2020-10-14 10:07:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:48,692 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2503 transitions. [2020-10-14 10:07:48,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:48,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2503 transitions. [2020-10-14 10:07:48,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-14 10:07:48,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:48,697 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:48,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:07:48,697 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:48,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1117019694, now seen corresponding path program 1 times [2020-10-14 10:07:48,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:48,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511832308] [2020-10-14 10:07:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:48,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:53,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:53,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 10:07:53,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:53,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 10:07:53,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:53,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:07:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 10:07:53,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:53,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:53,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:53,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:53,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:53,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:53,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:07:53,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:53,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:53,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:07:53,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511832308] [2020-10-14 10:07:53,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:53,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:53,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826415672] [2020-10-14 10:07:53,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:53,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:53,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:53,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:53,902 INFO L87 Difference]: Start difference. First operand 1605 states and 2503 transitions. Second operand 5 states. [2020-10-14 10:07:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:54,710 INFO L93 Difference]: Finished difference Result 3434 states and 5311 transitions. [2020-10-14 10:07:54,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:54,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-10-14 10:07:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:54,714 INFO L225 Difference]: With dead ends: 3434 [2020-10-14 10:07:54,714 INFO L226 Difference]: Without dead ends: 1843 [2020-10-14 10:07:54,716 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 10:07:54,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-10-14 10:07:54,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1605. [2020-10-14 10:07:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:07:54,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2496 transitions. [2020-10-14 10:07:54,754 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2496 transitions. Word has length 279 [2020-10-14 10:07:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:54,754 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2496 transitions. [2020-10-14 10:07:54,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2496 transitions. [2020-10-14 10:07:54,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 10:07:54,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:54,757 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:54,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:07:54,757 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:54,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:54,758 INFO L82 PathProgramCache]: Analyzing trace with hash -2061113221, now seen corresponding path program 1 times [2020-10-14 10:07:54,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:54,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802762513] [2020-10-14 10:07:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:54,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:55,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:59,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:59,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-14 10:07:59,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 10:07:59,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:59,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:07:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:07:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:59,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:59,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:59,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:59,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:59,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:07:59,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:59,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:07:59,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802762513] [2020-10-14 10:07:59,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:59,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:59,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475128080] [2020-10-14 10:07:59,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:59,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:59,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:59,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:59,947 INFO L87 Difference]: Start difference. First operand 1605 states and 2496 transitions. Second operand 5 states. [2020-10-14 10:08:00,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:00,710 INFO L93 Difference]: Finished difference Result 3378 states and 5206 transitions. [2020-10-14 10:08:00,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:00,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-14 10:08:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:00,716 INFO L225 Difference]: With dead ends: 3378 [2020-10-14 10:08:00,716 INFO L226 Difference]: Without dead ends: 1787 [2020-10-14 10:08:00,719 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 10:08:00,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-10-14 10:08:00,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1605. [2020-10-14 10:08:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:08:00,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2489 transitions. [2020-10-14 10:08:00,767 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2489 transitions. Word has length 280 [2020-10-14 10:08:00,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:00,768 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2489 transitions. [2020-10-14 10:08:00,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:00,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2489 transitions. [2020-10-14 10:08:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 10:08:00,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:00,772 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:00,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:08:00,772 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:00,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1268248456, now seen corresponding path program 1 times [2020-10-14 10:08:00,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:00,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800143631] [2020-10-14 10:08:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:00,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:05,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:05,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 10:08:05,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 10:08:05,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:05,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:08:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 10:08:05,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:05,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:05,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:05,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:05,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:05,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:05,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:08:05,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800143631] [2020-10-14 10:08:05,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:05,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:05,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475279519] [2020-10-14 10:08:05,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:05,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:05,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:05,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:05,962 INFO L87 Difference]: Start difference. First operand 1605 states and 2489 transitions. Second operand 5 states. [2020-10-14 10:08:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:06,744 INFO L93 Difference]: Finished difference Result 3378 states and 5192 transitions. [2020-10-14 10:08:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:06,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2020-10-14 10:08:06,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:06,748 INFO L225 Difference]: With dead ends: 3378 [2020-10-14 10:08:06,748 INFO L226 Difference]: Without dead ends: 1787 [2020-10-14 10:08:06,750 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 10:08:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-10-14 10:08:06,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1605. [2020-10-14 10:08:06,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:08:06,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2482 transitions. [2020-10-14 10:08:06,801 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2482 transitions. Word has length 281 [2020-10-14 10:08:06,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:06,802 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2482 transitions. [2020-10-14 10:08:06,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:06,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2482 transitions. [2020-10-14 10:08:06,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-14 10:08:06,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:06,806 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:06,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:08:06,807 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:06,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1647621477, now seen corresponding path program 1 times [2020-10-14 10:08:06,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:06,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718862482] [2020-10-14 10:08:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:07,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:07,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:11,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 10:08:11,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 10:08:11,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:11,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:08:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:08:11,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:11,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:11,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:11,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:11,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:08:11,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:11,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:08:12,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718862482] [2020-10-14 10:08:12,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:12,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:12,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220288603] [2020-10-14 10:08:12,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:12,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:12,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:12,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:12,003 INFO L87 Difference]: Start difference. First operand 1605 states and 2482 transitions. Second operand 5 states. [2020-10-14 10:08:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:12,807 INFO L93 Difference]: Finished difference Result 3378 states and 5178 transitions. [2020-10-14 10:08:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:12,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-10-14 10:08:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:12,812 INFO L225 Difference]: With dead ends: 3378 [2020-10-14 10:08:12,812 INFO L226 Difference]: Without dead ends: 1787 [2020-10-14 10:08:12,815 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 10:08:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-10-14 10:08:12,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1605. [2020-10-14 10:08:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-14 10:08:12,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2475 transitions. [2020-10-14 10:08:12,876 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2475 transitions. Word has length 282 [2020-10-14 10:08:12,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:12,877 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2475 transitions. [2020-10-14 10:08:12,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:12,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2475 transitions. [2020-10-14 10:08:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-14 10:08:12,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:12,884 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:12,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:08:12,884 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:12,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:12,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1081046655, now seen corresponding path program 1 times [2020-10-14 10:08:12,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:12,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158937290] [2020-10-14 10:08:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:12,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:17,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 10:08:17,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 10:08:17,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:17,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 10:08:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:08:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:18,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:18,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:18,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:18,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:18,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2020-10-14 10:08:18,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158937290] [2020-10-14 10:08:18,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:18,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:18,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108109877] [2020-10-14 10:08:18,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:18,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:18,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:18,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:18,115 INFO L87 Difference]: Start difference. First operand 1605 states and 2475 transitions. Second operand 5 states. [2020-10-14 10:08:18,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:18,993 INFO L93 Difference]: Finished difference Result 3700 states and 5723 transitions. [2020-10-14 10:08:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:18,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-10-14 10:08:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:18,997 INFO L225 Difference]: With dead ends: 3700 [2020-10-14 10:08:18,997 INFO L226 Difference]: Without dead ends: 2109 [2020-10-14 10:08:19,000 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 10:08:19,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2020-10-14 10:08:19,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1829. [2020-10-14 10:08:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-10-14 10:08:19,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2881 transitions. [2020-10-14 10:08:19,038 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2881 transitions. Word has length 282 [2020-10-14 10:08:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:19,038 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2881 transitions. [2020-10-14 10:08:19,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2881 transitions. [2020-10-14 10:08:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-14 10:08:19,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:19,042 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:19,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:08:19,042 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:19,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:19,042 INFO L82 PathProgramCache]: Analyzing trace with hash -39780676, now seen corresponding path program 1 times [2020-10-14 10:08:19,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:19,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559486748] [2020-10-14 10:08:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:24,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:24,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 10:08:24,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 10:08:24,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:24,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:08:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 10:08:24,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:24,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:24,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:24,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:24,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:24,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:24,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:08:24,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:24,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:08:24,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559486748] [2020-10-14 10:08:24,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:24,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:24,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076192594] [2020-10-14 10:08:24,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:24,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:24,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:24,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:24,255 INFO L87 Difference]: Start difference. First operand 1829 states and 2881 transitions. Second operand 5 states. [2020-10-14 10:08:25,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:25,051 INFO L93 Difference]: Finished difference Result 3812 states and 5955 transitions. [2020-10-14 10:08:25,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:25,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 283 [2020-10-14 10:08:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:25,056 INFO L225 Difference]: With dead ends: 3812 [2020-10-14 10:08:25,057 INFO L226 Difference]: Without dead ends: 1997 [2020-10-14 10:08:25,060 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 10:08:25,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2020-10-14 10:08:25,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1829. [2020-10-14 10:08:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-10-14 10:08:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2874 transitions. [2020-10-14 10:08:25,121 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2874 transitions. Word has length 283 [2020-10-14 10:08:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:25,122 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2874 transitions. [2020-10-14 10:08:25,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2874 transitions. [2020-10-14 10:08:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-14 10:08:25,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:25,127 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:25,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:08:25,128 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:25,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:25,128 INFO L82 PathProgramCache]: Analyzing trace with hash 775150682, now seen corresponding path program 1 times [2020-10-14 10:08:25,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:25,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122019479] [2020-10-14 10:08:25,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:25,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:25,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:25,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:30,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:30,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 10:08:30,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 10:08:30,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:30,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:08:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 10:08:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:30,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:30,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:30,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:30,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:30,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:08:30,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:30,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:08:30,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122019479] [2020-10-14 10:08:30,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:30,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:30,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179212652] [2020-10-14 10:08:30,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:30,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:30,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:30,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:30,332 INFO L87 Difference]: Start difference. First operand 1829 states and 2874 transitions. Second operand 5 states. [2020-10-14 10:08:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:31,100 INFO L93 Difference]: Finished difference Result 3791 states and 5913 transitions. [2020-10-14 10:08:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:31,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 283 [2020-10-14 10:08:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:31,104 INFO L225 Difference]: With dead ends: 3791 [2020-10-14 10:08:31,104 INFO L226 Difference]: Without dead ends: 1976 [2020-10-14 10:08:31,108 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 10:08:31,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-10-14 10:08:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1829. [2020-10-14 10:08:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-10-14 10:08:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2867 transitions. [2020-10-14 10:08:31,155 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2867 transitions. Word has length 283 [2020-10-14 10:08:31,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:31,155 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2867 transitions. [2020-10-14 10:08:31,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2867 transitions. [2020-10-14 10:08:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-14 10:08:31,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:31,160 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:31,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:08:31,160 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:31,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:31,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1391686200, now seen corresponding path program 1 times [2020-10-14 10:08:31,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:31,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956307923] [2020-10-14 10:08:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:31,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:31,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:36,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:36,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-14 10:08:36,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:36,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 10:08:36,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:36,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:08:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 10:08:36,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:36,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:36,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:36,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:36,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:36,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:36,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:36,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:36,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:36,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:08:36,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956307923] [2020-10-14 10:08:36,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:36,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:36,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946983216] [2020-10-14 10:08:36,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:36,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:36,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:36,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:36,347 INFO L87 Difference]: Start difference. First operand 1829 states and 2867 transitions. Second operand 5 states. [2020-10-14 10:08:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:37,103 INFO L93 Difference]: Finished difference Result 3791 states and 5899 transitions. [2020-10-14 10:08:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:37,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-14 10:08:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:37,108 INFO L225 Difference]: With dead ends: 3791 [2020-10-14 10:08:37,108 INFO L226 Difference]: Without dead ends: 1976 [2020-10-14 10:08:37,111 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 10:08:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-10-14 10:08:37,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1829. [2020-10-14 10:08:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-10-14 10:08:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2860 transitions. [2020-10-14 10:08:37,149 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2860 transitions. Word has length 285 [2020-10-14 10:08:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:37,149 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2860 transitions. [2020-10-14 10:08:37,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:37,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2860 transitions. [2020-10-14 10:08:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-14 10:08:37,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:37,153 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:37,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:08:37,153 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:37,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1332071627, now seen corresponding path program 1 times [2020-10-14 10:08:37,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:37,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500066482] [2020-10-14 10:08:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:37,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:37,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:42,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:42,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 10:08:42,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:42,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 10:08:42,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:42,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:08:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:08:42,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:42,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:42,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:42,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:42,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:42,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:42,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:42,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:08:42,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500066482] [2020-10-14 10:08:42,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:42,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:42,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756697416] [2020-10-14 10:08:42,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:42,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:42,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:42,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:42,333 INFO L87 Difference]: Start difference. First operand 1829 states and 2860 transitions. Second operand 5 states. [2020-10-14 10:08:43,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:43,093 INFO L93 Difference]: Finished difference Result 3791 states and 5885 transitions. [2020-10-14 10:08:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:43,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2020-10-14 10:08:43,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:43,097 INFO L225 Difference]: With dead ends: 3791 [2020-10-14 10:08:43,097 INFO L226 Difference]: Without dead ends: 1976 [2020-10-14 10:08:43,100 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 10:08:43,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-10-14 10:08:43,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1829. [2020-10-14 10:08:43,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-10-14 10:08:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2853 transitions. [2020-10-14 10:08:43,142 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2853 transitions. Word has length 286 [2020-10-14 10:08:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:43,142 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2853 transitions. [2020-10-14 10:08:43,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2853 transitions. [2020-10-14 10:08:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-14 10:08:43,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:43,146 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:43,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 10:08:43,146 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:43,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:43,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1496457668, now seen corresponding path program 1 times [2020-10-14 10:08:43,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:43,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441095296] [2020-10-14 10:08:43,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:43,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:43,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:48,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:48,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 10:08:48,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:48,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 10:08:48,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:48,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:08:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 10:08:48,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:48,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:48,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:48,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:48,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:48,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:48,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:48,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:48,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:08:48,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441095296] [2020-10-14 10:08:48,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:48,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:48,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727245524] [2020-10-14 10:08:48,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:48,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:48,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:48,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:48,348 INFO L87 Difference]: Start difference. First operand 1829 states and 2853 transitions. Second operand 5 states. [2020-10-14 10:08:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:49,128 INFO L93 Difference]: Finished difference Result 3763 states and 5836 transitions. [2020-10-14 10:08:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:49,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2020-10-14 10:08:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:49,132 INFO L225 Difference]: With dead ends: 3763 [2020-10-14 10:08:49,132 INFO L226 Difference]: Without dead ends: 1948 [2020-10-14 10:08:49,135 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 10:08:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2020-10-14 10:08:49,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1829. [2020-10-14 10:08:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-10-14 10:08:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2846 transitions. [2020-10-14 10:08:49,176 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2846 transitions. Word has length 286 [2020-10-14 10:08:49,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:49,177 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2846 transitions. [2020-10-14 10:08:49,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:49,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2846 transitions. [2020-10-14 10:08:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-14 10:08:49,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:49,180 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:49,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 10:08:49,180 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:49,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:49,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1078060569, now seen corresponding path program 1 times [2020-10-14 10:08:49,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:49,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595698741] [2020-10-14 10:08:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:49,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:49,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:49,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:54,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:54,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 10:08:54,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:54,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 10:08:54,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:54,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:08:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:08:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:54,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:54,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:54,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:54,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:54,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:54,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:54,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:54,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:54,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:54,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:54,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:54,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:08:54,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595698741] [2020-10-14 10:08:54,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:54,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:54,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884653536] [2020-10-14 10:08:54,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:54,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:54,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:54,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:54,372 INFO L87 Difference]: Start difference. First operand 1829 states and 2846 transitions. Second operand 5 states. [2020-10-14 10:08:55,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:55,113 INFO L93 Difference]: Finished difference Result 3749 states and 5808 transitions. [2020-10-14 10:08:55,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:55,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 287 [2020-10-14 10:08:55,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:55,117 INFO L225 Difference]: With dead ends: 3749 [2020-10-14 10:08:55,117 INFO L226 Difference]: Without dead ends: 1934 [2020-10-14 10:08:55,120 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 10:08:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2020-10-14 10:08:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1829. [2020-10-14 10:08:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-10-14 10:08:55,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2839 transitions. [2020-10-14 10:08:55,162 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2839 transitions. Word has length 287 [2020-10-14 10:08:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:55,162 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2839 transitions. [2020-10-14 10:08:55,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2839 transitions. [2020-10-14 10:08:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-14 10:08:55,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:55,165 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:55,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 10:08:55,166 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:55,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:55,166 INFO L82 PathProgramCache]: Analyzing trace with hash -522437904, now seen corresponding path program 1 times [2020-10-14 10:08:55,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:55,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093553757] [2020-10-14 10:08:55,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:55,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:55,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:00,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:00,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 10:09:00,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:09:00,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 10:09:00,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:00,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:00,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:00,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:09:00,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:09:00,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:00,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:00,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:00,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:00,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:00,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:00,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:09:00,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093553757] [2020-10-14 10:09:00,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:00,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:00,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545917924] [2020-10-14 10:09:00,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:00,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:00,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:00,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:00,364 INFO L87 Difference]: Start difference. First operand 1829 states and 2839 transitions. Second operand 5 states. [2020-10-14 10:09:01,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:01,090 INFO L93 Difference]: Finished difference Result 3749 states and 5794 transitions. [2020-10-14 10:09:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:01,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2020-10-14 10:09:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:01,095 INFO L225 Difference]: With dead ends: 3749 [2020-10-14 10:09:01,095 INFO L226 Difference]: Without dead ends: 1934 [2020-10-14 10:09:01,099 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 10:09:01,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2020-10-14 10:09:01,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1829. [2020-10-14 10:09:01,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-10-14 10:09:01,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2832 transitions. [2020-10-14 10:09:01,140 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2832 transitions. Word has length 288 [2020-10-14 10:09:01,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:01,140 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2832 transitions. [2020-10-14 10:09:01,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:01,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2832 transitions. [2020-10-14 10:09:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-14 10:09:01,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:01,144 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:09:01,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 10:09:01,144 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:01,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:01,144 INFO L82 PathProgramCache]: Analyzing trace with hash -449123924, now seen corresponding path program 1 times [2020-10-14 10:09:01,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:01,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491330773] [2020-10-14 10:09:01,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:01,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:06,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:06,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 10:09:06,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:09:06,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:09:06,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:06,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:09:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:09:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:06,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:06,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:06,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:06,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:06,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:06,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:06,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 10:09:06,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491330773] [2020-10-14 10:09:06,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:06,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:06,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505130955] [2020-10-14 10:09:06,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:06,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:06,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:06,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:06,317 INFO L87 Difference]: Start difference. First operand 1829 states and 2832 transitions. Second operand 5 states. [2020-10-14 10:09:07,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:07,034 INFO L93 Difference]: Finished difference Result 3735 states and 5766 transitions. [2020-10-14 10:09:07,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:07,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2020-10-14 10:09:07,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:07,037 INFO L225 Difference]: With dead ends: 3735 [2020-10-14 10:09:07,037 INFO L226 Difference]: Without dead ends: 1920 [2020-10-14 10:09:07,040 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 10:09:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2020-10-14 10:09:07,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1829. [2020-10-14 10:09:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-10-14 10:09:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2825 transitions. [2020-10-14 10:09:07,079 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2825 transitions. Word has length 289 [2020-10-14 10:09:07,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:07,079 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2825 transitions. [2020-10-14 10:09:07,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2825 transitions. [2020-10-14 10:09:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 10:09:07,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:07,082 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:09:07,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 10:09:07,083 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:07,083 INFO L82 PathProgramCache]: Analyzing trace with hash 978080104, now seen corresponding path program 1 times [2020-10-14 10:09:07,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:07,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188576301] [2020-10-14 10:09:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:07,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:07,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:12,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:12,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 10:09:12,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:09:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 10:09:12,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:12,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 10:09:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:09:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:12,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:12,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:12,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:12,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:09:12,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:12,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:12,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-14 10:09:12,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188576301] [2020-10-14 10:09:12,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:12,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:12,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258517812] [2020-10-14 10:09:12,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:12,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:12,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:12,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:12,270 INFO L87 Difference]: Start difference. First operand 1829 states and 2825 transitions. Second operand 5 states. [2020-10-14 10:09:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:12,952 INFO L93 Difference]: Finished difference Result 3721 states and 5738 transitions. [2020-10-14 10:09:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:12,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2020-10-14 10:09:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:12,956 INFO L225 Difference]: With dead ends: 3721 [2020-10-14 10:09:12,956 INFO L226 Difference]: Without dead ends: 1906 [2020-10-14 10:09:12,959 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 10:09:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2020-10-14 10:09:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1829. [2020-10-14 10:09:12,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-10-14 10:09:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2818 transitions. [2020-10-14 10:09:12,997 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2818 transitions. Word has length 296 [2020-10-14 10:09:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:12,998 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2818 transitions. [2020-10-14 10:09:12,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2818 transitions. [2020-10-14 10:09:13,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 10:09:13,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:13,001 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:09:13,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 10:09:13,001 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:13,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:13,001 INFO L82 PathProgramCache]: Analyzing trace with hash -280455371, now seen corresponding path program 1 times [2020-10-14 10:09:13,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:13,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086635567] [2020-10-14 10:09:13,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:13,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:13,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:13,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:18,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:18,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 10:09:18,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:09:18,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 10:09:18,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:18,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:18,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:09:18,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-14 10:09:18,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:09:18,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:18,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:18,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:18,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:18,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:18,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:18,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:18,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-10-14 10:09:18,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086635567] [2020-10-14 10:09:18,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:18,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:09:18,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340052809] [2020-10-14 10:09:18,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:09:18,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:18,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:09:18,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:09:18,185 INFO L87 Difference]: Start difference. First operand 1829 states and 2818 transitions. Second operand 4 states. [2020-10-14 10:09:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:19,032 INFO L93 Difference]: Finished difference Result 3638 states and 5623 transitions. [2020-10-14 10:09:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:09:19,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 298 [2020-10-14 10:09:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:19,036 INFO L225 Difference]: With dead ends: 3638 [2020-10-14 10:09:19,036 INFO L226 Difference]: Without dead ends: 2082 [2020-10-14 10:09:19,038 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 10:09:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2020-10-14 10:09:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2020-10-14 10:09:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2082 states. [2020-10-14 10:09:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 3206 transitions. [2020-10-14 10:09:19,092 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 3206 transitions. Word has length 298 [2020-10-14 10:09:19,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:19,092 INFO L479 AbstractCegarLoop]: Abstraction has 2082 states and 3206 transitions. [2020-10-14 10:09:19,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:09:19,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 3206 transitions. [2020-10-14 10:09:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-14 10:09:19,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:19,096 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:09:19,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 10:09:19,096 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:19,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:19,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2008421605, now seen corresponding path program 1 times [2020-10-14 10:09:19,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:19,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514816382] [2020-10-14 10:09:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:19,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:19,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:19,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:24,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:24,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-14 10:09:24,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:09:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 10:09:24,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:24,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:09:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-14 10:09:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:09:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:24,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:24,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:24,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:24,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:24,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:24,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:24,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-10-14 10:09:24,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514816382] [2020-10-14 10:09:24,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:24,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:09:24,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825923755] [2020-10-14 10:09:24,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:09:24,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:24,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:09:24,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:09:24,280 INFO L87 Difference]: Start difference. First operand 2082 states and 3206 transitions. Second operand 4 states. [2020-10-14 10:09:24,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:24,859 INFO L93 Difference]: Finished difference Result 3946 states and 6068 transitions. [2020-10-14 10:09:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:09:24,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 299 [2020-10-14 10:09:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:24,863 INFO L225 Difference]: With dead ends: 3946 [2020-10-14 10:09:24,863 INFO L226 Difference]: Without dead ends: 2137 [2020-10-14 10:09:24,866 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 10:09:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2020-10-14 10:09:24,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2020-10-14 10:09:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2020-10-14 10:09:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3269 transitions. [2020-10-14 10:09:24,914 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3269 transitions. Word has length 299 [2020-10-14 10:09:24,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:24,915 INFO L479 AbstractCegarLoop]: Abstraction has 2137 states and 3269 transitions. [2020-10-14 10:09:24,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:09:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3269 transitions. [2020-10-14 10:09:24,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-14 10:09:24,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:24,919 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:09:24,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 10:09:24,920 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:24,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:24,920 INFO L82 PathProgramCache]: Analyzing trace with hash -56564214, now seen corresponding path program 1 times [2020-10-14 10:09:24,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:24,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946670311] [2020-10-14 10:09:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:24,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:25,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:25,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking...