/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.02.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:00:41,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:00:41,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:00:41,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:00:41,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:00:41,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:00:41,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:00:41,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:00:41,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:00:41,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:00:41,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:00:41,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:00:41,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:00:41,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:00:41,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:00:41,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:00:41,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:00:41,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:00:41,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:00:41,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:00:41,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:00:41,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:00:41,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:00:41,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:00:41,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:00:41,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:00:41,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:00:41,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:00:41,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:00:41,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:00:41,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:00:41,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:00:41,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:00:41,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:00:41,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:00:41,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:00:41,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:00:41,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:00:41,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:00:41,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:00:41,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:00:41,397 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 10:00:41,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:00:41,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:00:41,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:00:41,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:00:41,422 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:00:41,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:00:41,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:00:41,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:00:41,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:00:41,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:00:41,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:00:41,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:00:41,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:00:41,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:00:41,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:00:41,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:00:41,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:00:41,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:00:41,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:00:41,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:00:41,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:00:41,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:00:41,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:00:41,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:00:41,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:00:41,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:00:41,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:00:41,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:00:41,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:00:41,427 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 10:00:41,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:00:41,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:00:41,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:00:41,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:00:41,777 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:00:41,778 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.02.i.cil-2.c [2020-10-14 10:00:41,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb160af62/3c75c4c464554249afc3201754826ff6/FLAGb9beac37f [2020-10-14 10:00:42,509 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:00:42,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.02.i.cil-2.c [2020-10-14 10:00:42,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb160af62/3c75c4c464554249afc3201754826ff6/FLAGb9beac37f [2020-10-14 10:00:42,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb160af62/3c75c4c464554249afc3201754826ff6 [2020-10-14 10:00:42,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:00:42,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:00:42,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:00:42,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:00:42,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:00:42,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:42" (1/1) ... [2020-10-14 10:00:42,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f1d2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:42, skipping insertion in model container [2020-10-14 10:00:42,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:42" (1/1) ... [2020-10-14 10:00:42,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:00:42,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:00:43,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:00:43,389 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:00:43,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:00:43,549 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:00:43,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:43 WrapperNode [2020-10-14 10:00:43,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:00:43,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:00:43,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:00:43,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:00:43,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:43" (1/1) ... [2020-10-14 10:00:43,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:43" (1/1) ... [2020-10-14 10:00:43,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:43" (1/1) ... [2020-10-14 10:00:43,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:43" (1/1) ... [2020-10-14 10:00:43,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:43" (1/1) ... [2020-10-14 10:00:43,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:43" (1/1) ... [2020-10-14 10:00:43,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:43" (1/1) ... [2020-10-14 10:00:43,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:00:43,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:00:43,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:00:43,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:00:43,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:43" (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 10:00:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:00:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:00:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:00:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:00:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:00:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:00:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:00:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:00:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:00:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:00:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:00:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:00:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:00:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:00:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:00:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:00:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:00:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:00:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:00:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:00:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:00:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:00:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:00:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:00:43,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:00:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:00:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:00:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:00:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:00:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:00:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:00:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:00:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:00:43,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:00:43,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:00:43,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:00:43,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:00:44,490 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:00:45,280 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:00:45,281 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:00:45,305 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:00:45,305 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:00:45,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:45 BoogieIcfgContainer [2020-10-14 10:00:45,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:00:45,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:00:45,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:00:45,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:00:45,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:00:42" (1/3) ... [2020-10-14 10:00:45,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b96a332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:45, skipping insertion in model container [2020-10-14 10:00:45,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:43" (2/3) ... [2020-10-14 10:00:45,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b96a332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:45, skipping insertion in model container [2020-10-14 10:00:45,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:45" (3/3) ... [2020-10-14 10:00:45,319 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.02.i.cil-2.c [2020-10-14 10:00:45,330 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:00:45,339 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:00:45,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:00:45,377 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:00:45,378 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:00:45,378 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:00:45,378 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:00:45,378 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:00:45,378 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:00:45,378 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:00:45,379 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:00:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-10-14 10:00:45,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 10:00:45,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:45,413 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, 1] [2020-10-14 10:00:45,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:45,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:45,418 INFO L82 PathProgramCache]: Analyzing trace with hash 416306971, now seen corresponding path program 1 times [2020-10-14 10:00:45,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:45,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589990268] [2020-10-14 10:00:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:45,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:46,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:46,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:46,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 10:00:46,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-14 10:00:46,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:46,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:00:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:00:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:00:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:00:46,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:46,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:46,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:46,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:46,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:00:46,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:46,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:46,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:46,685 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 10:00:46,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589990268] [2020-10-14 10:00:46,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:46,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:00:46,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885534478] [2020-10-14 10:00:46,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:00:46,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:46,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:00:46,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:46,711 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 4 states. [2020-10-14 10:00:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:47,452 INFO L93 Difference]: Finished difference Result 421 states and 708 transitions. [2020-10-14 10:00:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:00:47,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-14 10:00:47,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:47,495 INFO L225 Difference]: With dead ends: 421 [2020-10-14 10:00:47,496 INFO L226 Difference]: Without dead ends: 256 [2020-10-14 10:00:47,501 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 10:00:47,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-14 10:00:47,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-10-14 10:00:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-14 10:00:47,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 384 transitions. [2020-10-14 10:00:47,573 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 384 transitions. Word has length 51 [2020-10-14 10:00:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:47,574 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 384 transitions. [2020-10-14 10:00:47,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:00:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 384 transitions. [2020-10-14 10:00:47,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 10:00:47,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:47,579 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, 1] [2020-10-14 10:00:47,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:00:47,580 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:47,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:47,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1266106814, now seen corresponding path program 1 times [2020-10-14 10:00:47,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:47,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101410259] [2020-10-14 10:00:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:47,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:47,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:48,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:48,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 10:00:48,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-14 10:00:48,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:48,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:00:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:00:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:00:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:48,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:48,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:48,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:48,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:00:48,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:48,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:48,418 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 10:00:48,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101410259] [2020-10-14 10:00:48,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:48,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:00:48,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165097793] [2020-10-14 10:00:48,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:00:48,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:48,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:00:48,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:48,423 INFO L87 Difference]: Start difference. First operand 256 states and 384 transitions. Second operand 4 states. [2020-10-14 10:00:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:48,944 INFO L93 Difference]: Finished difference Result 498 states and 755 transitions. [2020-10-14 10:00:48,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:00:48,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 10:00:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:48,949 INFO L225 Difference]: With dead ends: 498 [2020-10-14 10:00:48,949 INFO L226 Difference]: Without dead ends: 376 [2020-10-14 10:00:48,951 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 10:00:48,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-14 10:00:48,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-10-14 10:00:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-14 10:00:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 566 transitions. [2020-10-14 10:00:48,980 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 566 transitions. Word has length 68 [2020-10-14 10:00:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:48,980 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 566 transitions. [2020-10-14 10:00:48,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:00:48,981 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 566 transitions. [2020-10-14 10:00:48,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 10:00:48,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:48,989 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, 1] [2020-10-14 10:00:48,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:00:48,990 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:48,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:48,992 INFO L82 PathProgramCache]: Analyzing trace with hash 273546962, now seen corresponding path program 1 times [2020-10-14 10:00:48,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:48,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376798183] [2020-10-14 10:00:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:49,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:49,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:50,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:50,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 10:00:50,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1647 [2020-10-14 10:00:50,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:50,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:00:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:00:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:00:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:50,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:50,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:50,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:50,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:50,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:00:50,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:50,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:50,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:50,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:50,813 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 10:00:50,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376798183] [2020-10-14 10:00:50,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:50,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:00:50,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648819666] [2020-10-14 10:00:50,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:00:50,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:50,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:00:50,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:50,816 INFO L87 Difference]: Start difference. First operand 376 states and 566 transitions. Second operand 4 states. [2020-10-14 10:00:51,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:51,359 INFO L93 Difference]: Finished difference Result 738 states and 1119 transitions. [2020-10-14 10:00:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:00:51,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-10-14 10:00:51,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:51,365 INFO L225 Difference]: With dead ends: 738 [2020-10-14 10:00:51,366 INFO L226 Difference]: Without dead ends: 496 [2020-10-14 10:00:51,370 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 10:00:51,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-10-14 10:00:51,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2020-10-14 10:00:51,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-10-14 10:00:51,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 749 transitions. [2020-10-14 10:00:51,412 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 749 transitions. Word has length 90 [2020-10-14 10:00:51,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:51,413 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 749 transitions. [2020-10-14 10:00:51,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:00:51,417 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 749 transitions. [2020-10-14 10:00:51,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 10:00:51,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:51,425 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:00:51,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:00:51,425 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:51,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:51,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1506452713, now seen corresponding path program 1 times [2020-10-14 10:00:51,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:51,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092381150] [2020-10-14 10:00:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:51,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:51,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:51,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 10:00:51,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:51,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-14 10:00:51,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:51,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:51,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:00:51,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 10:00:51,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:00:51,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:52,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:52,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:52,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:52,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:52,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:00:52,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:52,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:00:52,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092381150] [2020-10-14 10:00:52,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:52,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:00:52,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607122995] [2020-10-14 10:00:52,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:00:52,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:52,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:00:52,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:52,042 INFO L87 Difference]: Start difference. First operand 496 states and 749 transitions. Second operand 4 states. [2020-10-14 10:00:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:52,491 INFO L93 Difference]: Finished difference Result 618 states and 935 transitions. [2020-10-14 10:00:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:00:52,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-14 10:00:52,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:52,496 INFO L225 Difference]: With dead ends: 618 [2020-10-14 10:00:52,497 INFO L226 Difference]: Without dead ends: 616 [2020-10-14 10:00:52,497 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 10:00:52,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-10-14 10:00:52,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2020-10-14 10:00:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-10-14 10:00:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 933 transitions. [2020-10-14 10:00:52,518 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 933 transitions. Word has length 131 [2020-10-14 10:00:52,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:52,519 INFO L479 AbstractCegarLoop]: Abstraction has 616 states and 933 transitions. [2020-10-14 10:00:52,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:00:52,519 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 933 transitions. [2020-10-14 10:00:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 10:00:52,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:52,522 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:00:52,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:00:52,522 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:52,523 INFO L82 PathProgramCache]: Analyzing trace with hash -63541410, now seen corresponding path program 1 times [2020-10-14 10:00:52,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:52,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795981829] [2020-10-14 10:00:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:55,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:55,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 10:00:55,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:55,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2685 [2020-10-14 10:00:55,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:55,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:55,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:55,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 10:00:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:00:55,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:55,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:55,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:55,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:55,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:55,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:55,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:00:55,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:55,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:55,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:55,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:55,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 10:00:55,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795981829] [2020-10-14 10:00:55,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:55,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:55,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864536703] [2020-10-14 10:00:55,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:55,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:55,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:55,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:55,434 INFO L87 Difference]: Start difference. First operand 616 states and 933 transitions. Second operand 5 states. [2020-10-14 10:00:56,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:56,591 INFO L93 Difference]: Finished difference Result 1730 states and 2632 transitions. [2020-10-14 10:00:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:56,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-14 10:00:56,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:56,599 INFO L225 Difference]: With dead ends: 1730 [2020-10-14 10:00:56,600 INFO L226 Difference]: Without dead ends: 1128 [2020-10-14 10:00:56,603 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 10:00:56,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-10-14 10:00:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 841. [2020-10-14 10:00:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2020-10-14 10:00:56,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1343 transitions. [2020-10-14 10:00:56,644 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1343 transitions. Word has length 154 [2020-10-14 10:00:56,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:56,644 INFO L479 AbstractCegarLoop]: Abstraction has 841 states and 1343 transitions. [2020-10-14 10:00:56,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1343 transitions. [2020-10-14 10:00:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 10:00:56,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:56,654 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:00:56,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:00:56,654 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:56,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:56,655 INFO L82 PathProgramCache]: Analyzing trace with hash -960934688, now seen corresponding path program 1 times [2020-10-14 10:00:56,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:56,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137215937] [2020-10-14 10:00:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:56,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:01,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:01,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 10:01:01,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:01:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 10:01:01,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:01,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:01:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 10:01:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:01:01,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:01:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:01,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:01,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:01,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:01,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:01,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:01:01,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:01,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:01,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:01,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:01,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:01,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 10:01:01,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137215937] [2020-10-14 10:01:01,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:01,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:01,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403147075] [2020-10-14 10:01:01,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:01,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:01,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:01,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:01,893 INFO L87 Difference]: Start difference. First operand 841 states and 1343 transitions. Second operand 5 states. [2020-10-14 10:01:03,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:03,031 INFO L93 Difference]: Finished difference Result 1918 states and 3050 transitions. [2020-10-14 10:01:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:03,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-14 10:01:03,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:03,040 INFO L225 Difference]: With dead ends: 1918 [2020-10-14 10:01:03,041 INFO L226 Difference]: Without dead ends: 1091 [2020-10-14 10:01:03,045 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 10:01:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2020-10-14 10:01:03,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 961. [2020-10-14 10:01:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-10-14 10:01:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1553 transitions. [2020-10-14 10:01:03,099 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1553 transitions. Word has length 154 [2020-10-14 10:01:03,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:03,099 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1553 transitions. [2020-10-14 10:01:03,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1553 transitions. [2020-10-14 10:01:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 10:01:03,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:03,107 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:03,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:01:03,107 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:03,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:03,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1976938378, now seen corresponding path program 1 times [2020-10-14 10:01:03,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:03,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108975786] [2020-10-14 10:01:03,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:03,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:03,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:05,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:05,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 10:01:05,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:01:05,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2452 [2020-10-14 10:01:05,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:05,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:05,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:01:05,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 10:01:05,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:01:05,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:05,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:05,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:05,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:05,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:05,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:05,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:01:05,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:05,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:05,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 10:01:05,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108975786] [2020-10-14 10:01:05,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:05,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:05,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541219843] [2020-10-14 10:01:05,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:05,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:05,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:05,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:05,762 INFO L87 Difference]: Start difference. First operand 961 states and 1553 transitions. Second operand 5 states. [2020-10-14 10:01:07,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:07,021 INFO L93 Difference]: Finished difference Result 2178 states and 3440 transitions. [2020-10-14 10:01:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:07,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-14 10:01:07,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:07,031 INFO L225 Difference]: With dead ends: 2178 [2020-10-14 10:01:07,032 INFO L226 Difference]: Without dead ends: 1221 [2020-10-14 10:01:07,035 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 10:01:07,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-10-14 10:01:07,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 956. [2020-10-14 10:01:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2020-10-14 10:01:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1543 transitions. [2020-10-14 10:01:07,085 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1543 transitions. Word has length 155 [2020-10-14 10:01:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:07,086 INFO L479 AbstractCegarLoop]: Abstraction has 956 states and 1543 transitions. [2020-10-14 10:01:07,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1543 transitions. [2020-10-14 10:01:07,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 10:01:07,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:07,093 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:07,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:01:07,093 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:07,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:07,094 INFO L82 PathProgramCache]: Analyzing trace with hash 161353092, now seen corresponding path program 1 times [2020-10-14 10:01:07,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:07,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122696360] [2020-10-14 10:01:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:07,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:08,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:08,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:12,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:12,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 10:01:12,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:01:12,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 10:01:12,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:12,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 10:01:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:01:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:12,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:12,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:12,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:12,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:12,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:01:12,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:12,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:12,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:01:12,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122696360] [2020-10-14 10:01:12,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:12,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:12,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667122561] [2020-10-14 10:01:12,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:12,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:12,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:12,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:12,322 INFO L87 Difference]: Start difference. First operand 956 states and 1543 transitions. Second operand 5 states. [2020-10-14 10:01:13,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:13,436 INFO L93 Difference]: Finished difference Result 2400 states and 3842 transitions. [2020-10-14 10:01:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:13,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-14 10:01:13,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:13,446 INFO L225 Difference]: With dead ends: 2400 [2020-10-14 10:01:13,446 INFO L226 Difference]: Without dead ends: 1458 [2020-10-14 10:01:13,449 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 10:01:13,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-10-14 10:01:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1171. [2020-10-14 10:01:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-10-14 10:01:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1943 transitions. [2020-10-14 10:01:13,506 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1943 transitions. Word has length 167 [2020-10-14 10:01:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:13,507 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1943 transitions. [2020-10-14 10:01:13,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1943 transitions. [2020-10-14 10:01:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 10:01:13,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:13,512 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:13,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:01:13,512 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:13,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1725132610, now seen corresponding path program 1 times [2020-10-14 10:01:13,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:13,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695275604] [2020-10-14 10:01:13,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:13,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:13,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:13,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:13,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:14,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:18,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:18,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 10:01:18,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:18,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:01:18,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:18,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:01:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 10:01:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:18,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:18,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:18,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:18,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:01:18,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:18,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 10:01:18,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695275604] [2020-10-14 10:01:18,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:18,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:18,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459087899] [2020-10-14 10:01:18,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:18,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:18,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:18,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:18,838 INFO L87 Difference]: Start difference. First operand 1171 states and 1943 transitions. Second operand 5 states. [2020-10-14 10:01:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:19,562 INFO L93 Difference]: Finished difference Result 3470 states and 5762 transitions. [2020-10-14 10:01:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:19,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-14 10:01:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:19,576 INFO L225 Difference]: With dead ends: 3470 [2020-10-14 10:01:19,577 INFO L226 Difference]: Without dead ends: 2313 [2020-10-14 10:01:19,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2020-10-14 10:01:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2311. [2020-10-14 10:01:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2311 states. [2020-10-14 10:01:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3810 transitions. [2020-10-14 10:01:19,690 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3810 transitions. Word has length 168 [2020-10-14 10:01:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:19,691 INFO L479 AbstractCegarLoop]: Abstraction has 2311 states and 3810 transitions. [2020-10-14 10:01:19,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3810 transitions. [2020-10-14 10:01:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 10:01:19,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:19,701 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:19,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:01:19,701 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:19,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1372044228, now seen corresponding path program 1 times [2020-10-14 10:01:19,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:19,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993873815] [2020-10-14 10:01:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:19,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:24,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:24,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 10:01:24,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:01:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 10:01:24,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:24,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:01:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:01:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:24,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:24,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:24,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:24,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:24,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:01:24,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:24,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 10:01:24,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993873815] [2020-10-14 10:01:24,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:24,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:24,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342320883] [2020-10-14 10:01:24,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:24,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:24,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:24,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:24,899 INFO L87 Difference]: Start difference. First operand 2311 states and 3810 transitions. Second operand 5 states. [2020-10-14 10:01:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:25,985 INFO L93 Difference]: Finished difference Result 5600 states and 9121 transitions. [2020-10-14 10:01:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:25,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-14 10:01:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:26,002 INFO L225 Difference]: With dead ends: 5600 [2020-10-14 10:01:26,003 INFO L226 Difference]: Without dead ends: 3308 [2020-10-14 10:01:26,008 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 10:01:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2020-10-14 10:01:26,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 2526. [2020-10-14 10:01:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2526 states. [2020-10-14 10:01:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2526 states to 2526 states and 4175 transitions. [2020-10-14 10:01:26,107 INFO L78 Accepts]: Start accepts. Automaton has 2526 states and 4175 transitions. Word has length 168 [2020-10-14 10:01:26,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:26,107 INFO L479 AbstractCegarLoop]: Abstraction has 2526 states and 4175 transitions. [2020-10-14 10:01:26,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:26,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2526 states and 4175 transitions. [2020-10-14 10:01:26,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 10:01:26,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:26,115 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:26,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:01:26,115 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:26,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:26,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1963462997, now seen corresponding path program 1 times [2020-10-14 10:01:26,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:26,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990790323] [2020-10-14 10:01:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:26,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:26,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:31,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:31,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 10:01:31,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:01:31,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 10:01:31,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:31,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:01:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 10:01:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:31,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:31,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:31,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:31,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:31,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:31,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:31,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:31,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:31,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:31,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:31,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:31,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 10:01:31,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990790323] [2020-10-14 10:01:31,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:31,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:31,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970354922] [2020-10-14 10:01:31,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:31,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:31,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:31,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:31,318 INFO L87 Difference]: Start difference. First operand 2526 states and 4175 transitions. Second operand 5 states. [2020-10-14 10:01:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:32,346 INFO L93 Difference]: Finished difference Result 5765 states and 9404 transitions. [2020-10-14 10:01:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:32,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-14 10:01:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:32,363 INFO L225 Difference]: With dead ends: 5765 [2020-10-14 10:01:32,363 INFO L226 Difference]: Without dead ends: 3258 [2020-10-14 10:01:32,369 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 10:01:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2020-10-14 10:01:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 2536. [2020-10-14 10:01:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2536 states. [2020-10-14 10:01:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 4185 transitions. [2020-10-14 10:01:32,461 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 4185 transitions. Word has length 169 [2020-10-14 10:01:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:32,461 INFO L479 AbstractCegarLoop]: Abstraction has 2536 states and 4185 transitions. [2020-10-14 10:01:32,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:32,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 4185 transitions. [2020-10-14 10:01:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 10:01:32,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:32,468 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:32,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:01:32,469 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:32,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1120875188, now seen corresponding path program 1 times [2020-10-14 10:01:32,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:32,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114766798] [2020-10-14 10:01:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:32,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:32,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:32,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:37,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:37,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 10:01:37,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:37,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:01:37,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:37,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 10:01:37,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:01:37,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:37,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:37,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:37,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:37,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:37,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:01:37,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:37,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:37,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 10:01:37,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114766798] [2020-10-14 10:01:37,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:37,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:37,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830210796] [2020-10-14 10:01:37,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:37,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:37,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:37,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:37,618 INFO L87 Difference]: Start difference. First operand 2536 states and 4185 transitions. Second operand 5 states. [2020-10-14 10:01:38,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:38,619 INFO L93 Difference]: Finished difference Result 5625 states and 9076 transitions. [2020-10-14 10:01:38,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:38,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-14 10:01:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:38,635 INFO L225 Difference]: With dead ends: 5625 [2020-10-14 10:01:38,636 INFO L226 Difference]: Without dead ends: 3108 [2020-10-14 10:01:38,643 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 10:01:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2020-10-14 10:01:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2536. [2020-10-14 10:01:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2536 states. [2020-10-14 10:01:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 4175 transitions. [2020-10-14 10:01:38,749 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 4175 transitions. Word has length 181 [2020-10-14 10:01:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:38,749 INFO L479 AbstractCegarLoop]: Abstraction has 2536 states and 4175 transitions. [2020-10-14 10:01:38,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:38,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 4175 transitions. [2020-10-14 10:01:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 10:01:38,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:38,757 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:38,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:01:38,757 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:38,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:38,758 INFO L82 PathProgramCache]: Analyzing trace with hash -445101730, now seen corresponding path program 2 times [2020-10-14 10:01:38,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:38,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676461912] [2020-10-14 10:01:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:38,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:43,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:43,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 10:01:43,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:01:43,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:01:43,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:43,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 10:01:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:01:43,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:43,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:43,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:43,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:43,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:43,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:43,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:43,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:43,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 10:01:43,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676461912] [2020-10-14 10:01:43,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:43,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:43,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658904204] [2020-10-14 10:01:43,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:43,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:43,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:43,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:43,894 INFO L87 Difference]: Start difference. First operand 2536 states and 4175 transitions. Second operand 5 states. [2020-10-14 10:01:44,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:44,895 INFO L93 Difference]: Finished difference Result 6050 states and 9851 transitions. [2020-10-14 10:01:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:44,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-14 10:01:44,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:44,914 INFO L225 Difference]: With dead ends: 6050 [2020-10-14 10:01:44,915 INFO L226 Difference]: Without dead ends: 3533 [2020-10-14 10:01:44,921 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 10:01:44,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3533 states. [2020-10-14 10:01:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3533 to 2751. [2020-10-14 10:01:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2751 states. [2020-10-14 10:01:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 4540 transitions. [2020-10-14 10:01:45,112 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 4540 transitions. Word has length 182 [2020-10-14 10:01:45,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:45,112 INFO L479 AbstractCegarLoop]: Abstraction has 2751 states and 4540 transitions. [2020-10-14 10:01:45,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:45,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 4540 transitions. [2020-10-14 10:01:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 10:01:45,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:45,129 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:45,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:01:45,130 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:45,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:45,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1159768645, now seen corresponding path program 1 times [2020-10-14 10:01:45,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:45,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875366169] [2020-10-14 10:01:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:45,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:45,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:50,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:50,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 10:01:50,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:01:50,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:50,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 10:01:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:01:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:50,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:50,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:50,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:50,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:50,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:50,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:50,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:50,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:50,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:50,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:50,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:50,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 10:01:50,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875366169] [2020-10-14 10:01:50,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:50,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:50,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465057346] [2020-10-14 10:01:50,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:50,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:50,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:50,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:50,283 INFO L87 Difference]: Start difference. First operand 2751 states and 4540 transitions. Second operand 5 states. [2020-10-14 10:01:51,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:51,247 INFO L93 Difference]: Finished difference Result 6005 states and 9714 transitions. [2020-10-14 10:01:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:51,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-14 10:01:51,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:51,263 INFO L225 Difference]: With dead ends: 6005 [2020-10-14 10:01:51,264 INFO L226 Difference]: Without dead ends: 3273 [2020-10-14 10:01:51,270 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 10:01:51,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2020-10-14 10:01:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2751. [2020-10-14 10:01:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2751 states. [2020-10-14 10:01:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 4530 transitions. [2020-10-14 10:01:51,378 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 4530 transitions. Word has length 182 [2020-10-14 10:01:51,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:51,378 INFO L479 AbstractCegarLoop]: Abstraction has 2751 states and 4530 transitions. [2020-10-14 10:01:51,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 4530 transitions. [2020-10-14 10:01:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 10:01:51,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:51,387 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:51,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:01:51,387 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:51,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:51,388 INFO L82 PathProgramCache]: Analyzing trace with hash -824138350, now seen corresponding path program 1 times [2020-10-14 10:01:51,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:51,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747227604] [2020-10-14 10:01:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:51,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:51,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:51,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:52,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:56,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:56,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 10:01:56,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:56,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 10:01:56,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:56,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 10:01:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:01:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:56,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:56,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:56,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:56,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:56,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:56,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:56,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:56,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:56,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 10:01:56,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747227604] [2020-10-14 10:01:56,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:56,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:56,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867188763] [2020-10-14 10:01:56,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:56,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:56,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:56,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:56,554 INFO L87 Difference]: Start difference. First operand 2751 states and 4530 transitions. Second operand 5 states. [2020-10-14 10:01:57,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:57,546 INFO L93 Difference]: Finished difference Result 6480 states and 10561 transitions. [2020-10-14 10:01:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:57,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-14 10:01:57,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:57,559 INFO L225 Difference]: With dead ends: 6480 [2020-10-14 10:01:57,559 INFO L226 Difference]: Without dead ends: 3748 [2020-10-14 10:01:57,565 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 10:01:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2020-10-14 10:01:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 2751. [2020-10-14 10:01:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2751 states. [2020-10-14 10:01:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 4530 transitions. [2020-10-14 10:01:57,648 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 4530 transitions. Word has length 182 [2020-10-14 10:01:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:57,649 INFO L479 AbstractCegarLoop]: Abstraction has 2751 states and 4530 transitions. [2020-10-14 10:01:57,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 4530 transitions. [2020-10-14 10:01:57,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:01:57,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:57,656 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:01:57,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:01:57,657 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:57,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:57,657 INFO L82 PathProgramCache]: Analyzing trace with hash 633909363, now seen corresponding path program 2 times [2020-10-14 10:01:57,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:57,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437944222] [2020-10-14 10:01:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:58,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:02,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:02,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:02,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:02:02,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:02:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 10:02:02,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:02,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 10:02:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:02:02,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:02,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:02,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:02,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:02,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:02,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:02,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:02,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:02,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 10:02:02,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437944222] [2020-10-14 10:02:02,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:02,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:02,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159925437] [2020-10-14 10:02:02,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:02,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:02,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:02,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:02,792 INFO L87 Difference]: Start difference. First operand 2751 states and 4530 transitions. Second operand 5 states. [2020-10-14 10:02:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:03,785 INFO L93 Difference]: Finished difference Result 6430 states and 10479 transitions. [2020-10-14 10:02:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:03,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:02:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:03,795 INFO L225 Difference]: With dead ends: 6430 [2020-10-14 10:02:03,795 INFO L226 Difference]: Without dead ends: 3698 [2020-10-14 10:02:03,802 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 10:02:03,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2020-10-14 10:02:03,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 2751. [2020-10-14 10:02:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2751 states. [2020-10-14 10:02:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 4530 transitions. [2020-10-14 10:02:03,881 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 4530 transitions. Word has length 183 [2020-10-14 10:02:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:03,881 INFO L479 AbstractCegarLoop]: Abstraction has 2751 states and 4530 transitions. [2020-10-14 10:02:03,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 4530 transitions. [2020-10-14 10:02:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:02:03,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:03,889 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:03,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:02:03,890 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:03,890 INFO L82 PathProgramCache]: Analyzing trace with hash -80892069, now seen corresponding path program 1 times [2020-10-14 10:02:03,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:03,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222591335] [2020-10-14 10:02:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:04,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:04,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:08,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:08,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:02:08,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:02:08,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 10:02:08,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:08,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 10:02:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:02:08,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:09,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:09,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:09,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:09,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:09,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:09,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:09,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:09,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:09,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:09,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:09,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 10:02:09,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222591335] [2020-10-14 10:02:09,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:09,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:09,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257789725] [2020-10-14 10:02:09,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:09,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:09,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:09,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:09,037 INFO L87 Difference]: Start difference. First operand 2751 states and 4530 transitions. Second operand 5 states. [2020-10-14 10:02:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:09,877 INFO L93 Difference]: Finished difference Result 6600 states and 10751 transitions. [2020-10-14 10:02:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:09,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:02:09,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:09,894 INFO L225 Difference]: With dead ends: 6600 [2020-10-14 10:02:09,894 INFO L226 Difference]: Without dead ends: 3868 [2020-10-14 10:02:09,900 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 10:02:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2020-10-14 10:02:09,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 2751. [2020-10-14 10:02:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2751 states. [2020-10-14 10:02:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 4510 transitions. [2020-10-14 10:02:09,981 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 4510 transitions. Word has length 183 [2020-10-14 10:02:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:09,981 INFO L479 AbstractCegarLoop]: Abstraction has 2751 states and 4510 transitions. [2020-10-14 10:02:09,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 4510 transitions. [2020-10-14 10:02:09,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:02:09,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:09,990 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:09,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:02:09,990 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:09,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:09,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1768676031, now seen corresponding path program 1 times [2020-10-14 10:02:09,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:09,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342260489] [2020-10-14 10:02:09,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:10,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:15,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:15,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:02:15,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:02:15,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:15,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 10:02:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:02:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:15,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:15,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:15,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:15,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:15,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:15,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:15,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:15,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 10:02:15,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342260489] [2020-10-14 10:02:15,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:15,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:15,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662097184] [2020-10-14 10:02:15,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:15,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:15,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:15,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:15,100 INFO L87 Difference]: Start difference. First operand 2751 states and 4510 transitions. Second operand 5 states. [2020-10-14 10:02:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:16,042 INFO L93 Difference]: Finished difference Result 6430 states and 10439 transitions. [2020-10-14 10:02:16,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:16,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:02:16,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:16,053 INFO L225 Difference]: With dead ends: 6430 [2020-10-14 10:02:16,054 INFO L226 Difference]: Without dead ends: 3698 [2020-10-14 10:02:16,060 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 10:02:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2020-10-14 10:02:16,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 2751. [2020-10-14 10:02:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2751 states. [2020-10-14 10:02:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 4510 transitions. [2020-10-14 10:02:16,150 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 4510 transitions. Word has length 183 [2020-10-14 10:02:16,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:16,150 INFO L479 AbstractCegarLoop]: Abstraction has 2751 states and 4510 transitions. [2020-10-14 10:02:16,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:16,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 4510 transitions. [2020-10-14 10:02:16,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:02:16,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:16,158 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:02:16,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:02:16,159 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:16,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:16,159 INFO L82 PathProgramCache]: Analyzing trace with hash -960493034, now seen corresponding path program 1 times [2020-10-14 10:02:16,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:16,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011002286] [2020-10-14 10:02:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:16,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:16,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:16,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:21,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:21,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:02:21,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:02:21,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:02:21,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:21,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 10:02:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:02:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:21,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:21,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:02:21,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:21,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 10:02:21,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011002286] [2020-10-14 10:02:21,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:21,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:21,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006243645] [2020-10-14 10:02:21,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:21,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:21,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:21,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:21,326 INFO L87 Difference]: Start difference. First operand 2751 states and 4510 transitions. Second operand 5 states. [2020-10-14 10:02:22,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:22,085 INFO L93 Difference]: Finished difference Result 6785 states and 11014 transitions. [2020-10-14 10:02:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:22,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:02:22,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:22,098 INFO L225 Difference]: With dead ends: 6785 [2020-10-14 10:02:22,099 INFO L226 Difference]: Without dead ends: 4053 [2020-10-14 10:02:22,105 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 10:02:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2020-10-14 10:02:22,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 2761. [2020-10-14 10:02:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2761 states. [2020-10-14 10:02:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 4520 transitions. [2020-10-14 10:02:22,195 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 4520 transitions. Word has length 184 [2020-10-14 10:02:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:22,196 INFO L479 AbstractCegarLoop]: Abstraction has 2761 states and 4520 transitions. [2020-10-14 10:02:22,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 4520 transitions. [2020-10-14 10:02:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:02:22,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:22,204 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:22,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:02:22,204 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:22,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash -971281517, now seen corresponding path program 1 times [2020-10-14 10:02:22,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:22,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088211660] [2020-10-14 10:02:22,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:22,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:22,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:27,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:27,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:02:27,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:27,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 10:02:27,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:27,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:02:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:02:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:27,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:27,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:27,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:27,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:27,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:27,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:27,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:27,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 10:02:27,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088211660] [2020-10-14 10:02:27,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:27,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:27,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898336437] [2020-10-14 10:02:27,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:27,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:27,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:27,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:27,337 INFO L87 Difference]: Start difference. First operand 2761 states and 4520 transitions. Second operand 5 states. [2020-10-14 10:02:28,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:28,303 INFO L93 Difference]: Finished difference Result 6450 states and 10449 transitions. [2020-10-14 10:02:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:28,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:02:28,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:28,315 INFO L225 Difference]: With dead ends: 6450 [2020-10-14 10:02:28,316 INFO L226 Difference]: Without dead ends: 3708 [2020-10-14 10:02:28,321 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 10:02:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2020-10-14 10:02:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 2946. [2020-10-14 10:02:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2946 states. [2020-10-14 10:02:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 4825 transitions. [2020-10-14 10:02:28,441 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 4825 transitions. Word has length 185 [2020-10-14 10:02:28,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:28,442 INFO L479 AbstractCegarLoop]: Abstraction has 2946 states and 4825 transitions. [2020-10-14 10:02:28,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 4825 transitions. [2020-10-14 10:02:28,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 10:02:28,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:28,449 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:28,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:02:28,450 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:28,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1080935179, now seen corresponding path program 1 times [2020-10-14 10:02:28,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:28,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762443557] [2020-10-14 10:02:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:28,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:28,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:28,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:33,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:33,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:33,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 10:02:33,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 10:02:33,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:33,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 10:02:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:02:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:33,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:33,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:33,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:33,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:33,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:33,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:33,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:33,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:33,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-14 10:02:33,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762443557] [2020-10-14 10:02:33,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:33,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:33,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54031091] [2020-10-14 10:02:33,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:33,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:33,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:33,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:33,632 INFO L87 Difference]: Start difference. First operand 2946 states and 4825 transitions. Second operand 5 states. [2020-10-14 10:02:34,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:34,608 INFO L93 Difference]: Finished difference Result 6820 states and 11059 transitions. [2020-10-14 10:02:34,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:34,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-14 10:02:34,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:34,615 INFO L225 Difference]: With dead ends: 6820 [2020-10-14 10:02:34,615 INFO L226 Difference]: Without dead ends: 3893 [2020-10-14 10:02:34,620 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 10:02:34,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2020-10-14 10:02:34,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 2946. [2020-10-14 10:02:34,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2946 states. [2020-10-14 10:02:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 4825 transitions. [2020-10-14 10:02:34,715 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 4825 transitions. Word has length 186 [2020-10-14 10:02:34,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:34,715 INFO L479 AbstractCegarLoop]: Abstraction has 2946 states and 4825 transitions. [2020-10-14 10:02:34,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 4825 transitions. [2020-10-14 10:02:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 10:02:34,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:34,724 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:34,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:02:34,727 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:34,728 INFO L82 PathProgramCache]: Analyzing trace with hash 990932937, now seen corresponding path program 1 times [2020-10-14 10:02:34,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:34,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082020295] [2020-10-14 10:02:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:34,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:34,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:35,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:37,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:37,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 10:02:37,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:37,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2840 [2020-10-14 10:02:37,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:37,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 10:02:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:02:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:37,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:37,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:37,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:37,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:37,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:37,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:37,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:37,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:37,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:37,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:37,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-14 10:02:37,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082020295] [2020-10-14 10:02:37,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:37,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:37,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049724606] [2020-10-14 10:02:37,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:37,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:37,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:37,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:37,708 INFO L87 Difference]: Start difference. First operand 2946 states and 4825 transitions. Second operand 5 states. [2020-10-14 10:02:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:38,649 INFO L93 Difference]: Finished difference Result 6788 states and 11016 transitions. [2020-10-14 10:02:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:38,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-14 10:02:38,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:38,658 INFO L225 Difference]: With dead ends: 6788 [2020-10-14 10:02:38,658 INFO L226 Difference]: Without dead ends: 3841 [2020-10-14 10:02:38,663 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 10:02:38,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2020-10-14 10:02:38,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3171. [2020-10-14 10:02:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3171 states. [2020-10-14 10:02:38,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 5200 transitions. [2020-10-14 10:02:38,779 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 5200 transitions. Word has length 186 [2020-10-14 10:02:38,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:38,779 INFO L479 AbstractCegarLoop]: Abstraction has 3171 states and 5200 transitions. [2020-10-14 10:02:38,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:38,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 5200 transitions. [2020-10-14 10:02:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 10:02:38,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:38,786 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:38,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:02:38,787 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:38,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1962524607, now seen corresponding path program 1 times [2020-10-14 10:02:38,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:38,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092076906] [2020-10-14 10:02:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:38,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:40,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:40,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 10:02:40,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:02:40,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1758 [2020-10-14 10:02:40,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:40,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 10:02:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:02:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:40,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:40,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:40,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:40,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:40,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:40,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-10-14 10:02:40,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092076906] [2020-10-14 10:02:40,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:40,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:40,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506107426] [2020-10-14 10:02:40,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:40,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:40,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:40,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:40,665 INFO L87 Difference]: Start difference. First operand 3171 states and 5200 transitions. Second operand 5 states. [2020-10-14 10:02:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:41,649 INFO L93 Difference]: Finished difference Result 7270 states and 11809 transitions. [2020-10-14 10:02:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:41,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-14 10:02:41,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:41,656 INFO L225 Difference]: With dead ends: 7270 [2020-10-14 10:02:41,656 INFO L226 Difference]: Without dead ends: 4118 [2020-10-14 10:02:41,661 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 10:02:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2020-10-14 10:02:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 3171. [2020-10-14 10:02:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3171 states. [2020-10-14 10:02:41,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 5200 transitions. [2020-10-14 10:02:41,764 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 5200 transitions. Word has length 186 [2020-10-14 10:02:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:41,765 INFO L479 AbstractCegarLoop]: Abstraction has 3171 states and 5200 transitions. [2020-10-14 10:02:41,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 5200 transitions. [2020-10-14 10:02:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 10:02:41,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:41,771 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:41,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:02:41,772 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:41,772 INFO L82 PathProgramCache]: Analyzing trace with hash 843593151, now seen corresponding path program 1 times [2020-10-14 10:02:41,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:41,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212398150] [2020-10-14 10:02:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:41,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:41,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:41,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:46,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:46,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-14 10:02:46,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 10:02:46,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:46,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:02:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 10:02:46,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:46,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:46,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:46,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:46,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:46,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:46,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:46,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:46,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 10:02:46,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212398150] [2020-10-14 10:02:46,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:46,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:46,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157344738] [2020-10-14 10:02:46,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:46,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:46,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:46,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:46,886 INFO L87 Difference]: Start difference. First operand 3171 states and 5200 transitions. Second operand 5 states. [2020-10-14 10:02:47,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:47,864 INFO L93 Difference]: Finished difference Result 7085 states and 11494 transitions. [2020-10-14 10:02:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:47,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-14 10:02:47,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:47,870 INFO L225 Difference]: With dead ends: 7085 [2020-10-14 10:02:47,870 INFO L226 Difference]: Without dead ends: 3933 [2020-10-14 10:02:47,875 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 10:02:47,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2020-10-14 10:02:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 3181. [2020-10-14 10:02:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3181 states. [2020-10-14 10:02:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 5210 transitions. [2020-10-14 10:02:47,949 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 5210 transitions. Word has length 187 [2020-10-14 10:02:47,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:47,949 INFO L479 AbstractCegarLoop]: Abstraction has 3181 states and 5210 transitions. [2020-10-14 10:02:47,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 5210 transitions. [2020-10-14 10:02:47,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 10:02:47,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:47,954 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:47,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:02:47,954 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:47,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:47,954 INFO L82 PathProgramCache]: Analyzing trace with hash -289704090, now seen corresponding path program 1 times [2020-10-14 10:02:47,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:47,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902830776] [2020-10-14 10:02:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:48,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:48,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:52,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:53,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:53,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 10:02:53,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:53,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 10:02:53,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:53,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 10:02:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:02:53,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:53,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:53,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:53,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:53,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:53,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-14 10:02:53,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902830776] [2020-10-14 10:02:53,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:53,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:53,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266804854] [2020-10-14 10:02:53,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:53,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:53,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:53,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:53,110 INFO L87 Difference]: Start difference. First operand 3181 states and 5210 transitions. Second operand 5 states. [2020-10-14 10:02:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:54,077 INFO L93 Difference]: Finished difference Result 7258 states and 11786 transitions. [2020-10-14 10:02:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:54,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 10:02:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:54,082 INFO L225 Difference]: With dead ends: 7258 [2020-10-14 10:02:54,082 INFO L226 Difference]: Without dead ends: 4076 [2020-10-14 10:02:54,087 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 10:02:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2020-10-14 10:02:54,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3181. [2020-10-14 10:02:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3181 states. [2020-10-14 10:02:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 5210 transitions. [2020-10-14 10:02:54,178 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 5210 transitions. Word has length 188 [2020-10-14 10:02:54,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:54,178 INFO L479 AbstractCegarLoop]: Abstraction has 3181 states and 5210 transitions. [2020-10-14 10:02:54,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 5210 transitions. [2020-10-14 10:02:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 10:02:54,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:54,185 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:54,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:02:54,185 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:54,185 INFO L82 PathProgramCache]: Analyzing trace with hash 141591395, now seen corresponding path program 1 times [2020-10-14 10:02:54,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:54,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148447378] [2020-10-14 10:02:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:54,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:55,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:55,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:59,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:59,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 10:02:59,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:59,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 10:02:59,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:59,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:59,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:02:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:02:59,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:59,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:59,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:59,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:59,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:59,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:02:59,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:59,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 10:02:59,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148447378] [2020-10-14 10:02:59,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:59,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:59,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036881996] [2020-10-14 10:02:59,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:59,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:59,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:59,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:59,314 INFO L87 Difference]: Start difference. First operand 3181 states and 5210 transitions. Second operand 5 states. [2020-10-14 10:03:00,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:00,298 INFO L93 Difference]: Finished difference Result 7065 states and 11454 transitions. [2020-10-14 10:03:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:00,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 10:03:00,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:00,304 INFO L225 Difference]: With dead ends: 7065 [2020-10-14 10:03:00,304 INFO L226 Difference]: Without dead ends: 3903 [2020-10-14 10:03:00,309 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 10:03:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2020-10-14 10:03:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 3191. [2020-10-14 10:03:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3191 states. [2020-10-14 10:03:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 5220 transitions. [2020-10-14 10:03:00,404 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 5220 transitions. Word has length 188 [2020-10-14 10:03:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:00,405 INFO L479 AbstractCegarLoop]: Abstraction has 3191 states and 5220 transitions. [2020-10-14 10:03:00,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 5220 transitions. [2020-10-14 10:03:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 10:03:00,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:00,412 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:00,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:03:00,412 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:00,413 INFO L82 PathProgramCache]: Analyzing trace with hash 443196148, now seen corresponding path program 1 times [2020-10-14 10:03:00,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:00,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882792928] [2020-10-14 10:03:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:00,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:00,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:02,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:05,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:05,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 10:03:05,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 10:03:05,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:05,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:03:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:03:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:05,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:05,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:05,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:05,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:03:05,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:05,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 10:03:05,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882792928] [2020-10-14 10:03:05,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:05,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:05,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913631069] [2020-10-14 10:03:05,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:05,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:05,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:05,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:05,539 INFO L87 Difference]: Start difference. First operand 3191 states and 5220 transitions. Second operand 5 states. [2020-10-14 10:03:06,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:06,507 INFO L93 Difference]: Finished difference Result 7075 states and 11454 transitions. [2020-10-14 10:03:06,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:06,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-14 10:03:06,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:06,513 INFO L225 Difference]: With dead ends: 7075 [2020-10-14 10:03:06,513 INFO L226 Difference]: Without dead ends: 3903 [2020-10-14 10:03:06,517 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 10:03:06,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2020-10-14 10:03:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 3221. [2020-10-14 10:03:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3221 states. [2020-10-14 10:03:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 5250 transitions. [2020-10-14 10:03:06,599 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 5250 transitions. Word has length 192 [2020-10-14 10:03:06,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:06,600 INFO L479 AbstractCegarLoop]: Abstraction has 3221 states and 5250 transitions. [2020-10-14 10:03:06,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:06,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 5250 transitions. [2020-10-14 10:03:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 10:03:06,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:06,606 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:06,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:03:06,606 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:06,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1170870163, now seen corresponding path program 1 times [2020-10-14 10:03:06,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:06,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023693463] [2020-10-14 10:03:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:06,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:06,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:08,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:08,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:11,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:11,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 10:03:11,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:03:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 10:03:11,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:11,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:11,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:11,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:03:11,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:03:11,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:11,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:11,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:11,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:11,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:11,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:11,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:03:11,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:11,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 10:03:11,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023693463] [2020-10-14 10:03:11,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:11,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:11,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525173818] [2020-10-14 10:03:11,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:11,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:11,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:11,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:11,814 INFO L87 Difference]: Start difference. First operand 3221 states and 5250 transitions. Second operand 5 states. [2020-10-14 10:03:12,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:12,762 INFO L93 Difference]: Finished difference Result 7065 states and 11424 transitions. [2020-10-14 10:03:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:12,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 10:03:12,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:12,767 INFO L225 Difference]: With dead ends: 7065 [2020-10-14 10:03:12,767 INFO L226 Difference]: Without dead ends: 3863 [2020-10-14 10:03:12,771 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 10:03:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2020-10-14 10:03:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3231. [2020-10-14 10:03:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3231 states. [2020-10-14 10:03:12,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 5260 transitions. [2020-10-14 10:03:12,862 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 5260 transitions. Word has length 193 [2020-10-14 10:03:12,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:12,862 INFO L479 AbstractCegarLoop]: Abstraction has 3231 states and 5260 transitions. [2020-10-14 10:03:12,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:12,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 5260 transitions. [2020-10-14 10:03:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 10:03:12,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:12,868 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:12,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:03:12,868 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:12,868 INFO L82 PathProgramCache]: Analyzing trace with hash 697339145, now seen corresponding path program 1 times [2020-10-14 10:03:12,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:12,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386131793] [2020-10-14 10:03:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:12,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:12,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:13,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:15,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:17,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:17,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 10:03:17,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:17,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 10:03:17,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:17,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:03:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 10:03:17,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:17,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:18,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:18,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:18,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:18,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:18,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:18,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 10:03:18,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386131793] [2020-10-14 10:03:18,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:18,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:18,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454504242] [2020-10-14 10:03:18,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:18,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:18,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:18,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:18,027 INFO L87 Difference]: Start difference. First operand 3231 states and 5260 transitions. Second operand 5 states. [2020-10-14 10:03:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:19,000 INFO L93 Difference]: Finished difference Result 7075 states and 11424 transitions. [2020-10-14 10:03:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:19,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-14 10:03:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:19,007 INFO L225 Difference]: With dead ends: 7075 [2020-10-14 10:03:19,007 INFO L226 Difference]: Without dead ends: 3863 [2020-10-14 10:03:19,012 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 10:03:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2020-10-14 10:03:19,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3261. [2020-10-14 10:03:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3261 states. [2020-10-14 10:03:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 5310 transitions. [2020-10-14 10:03:19,089 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 5310 transitions. Word has length 195 [2020-10-14 10:03:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:19,089 INFO L479 AbstractCegarLoop]: Abstraction has 3261 states and 5310 transitions. [2020-10-14 10:03:19,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 5310 transitions. [2020-10-14 10:03:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 10:03:19,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:19,093 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:19,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:03:19,093 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:19,093 INFO L82 PathProgramCache]: Analyzing trace with hash 910797360, now seen corresponding path program 1 times [2020-10-14 10:03:19,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:19,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010010702] [2020-10-14 10:03:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:19,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:21,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:24,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:24,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 10:03:24,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:03:24,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:03:24,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:24,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:03:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:03:24,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:24,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:24,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:24,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:24,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:24,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:24,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:03:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 10:03:24,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010010702] [2020-10-14 10:03:24,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:24,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:24,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652282321] [2020-10-14 10:03:24,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:24,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:24,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:24,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:24,214 INFO L87 Difference]: Start difference. First operand 3261 states and 5310 transitions. Second operand 5 states. [2020-10-14 10:03:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:25,150 INFO L93 Difference]: Finished difference Result 7025 states and 11334 transitions. [2020-10-14 10:03:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:25,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-14 10:03:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:25,157 INFO L225 Difference]: With dead ends: 7025 [2020-10-14 10:03:25,157 INFO L226 Difference]: Without dead ends: 3783 [2020-10-14 10:03:25,162 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 10:03:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2020-10-14 10:03:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3271. [2020-10-14 10:03:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3271 states. [2020-10-14 10:03:25,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 5320 transitions. [2020-10-14 10:03:25,283 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 5320 transitions. Word has length 196 [2020-10-14 10:03:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:25,283 INFO L479 AbstractCegarLoop]: Abstraction has 3271 states and 5320 transitions. [2020-10-14 10:03:25,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:25,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 5320 transitions. [2020-10-14 10:03:25,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 10:03:25,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:25,289 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:25,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:03:25,290 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:25,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:25,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1248645921, now seen corresponding path program 1 times [2020-10-14 10:03:25,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:25,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943298582] [2020-10-14 10:03:25,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:25,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:25,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:25,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:28,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:28,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:30,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:30,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 10:03:30,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:03:30,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 10:03:30,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:30,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:03:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:03:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:30,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:30,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:30,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:30,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:30,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:30,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:30,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:30,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 10:03:30,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943298582] [2020-10-14 10:03:30,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:30,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:30,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340750649] [2020-10-14 10:03:30,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:30,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:30,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:30,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:30,423 INFO L87 Difference]: Start difference. First operand 3271 states and 5320 transitions. Second operand 5 states. [2020-10-14 10:03:31,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:31,355 INFO L93 Difference]: Finished difference Result 7035 states and 11334 transitions. [2020-10-14 10:03:31,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:31,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-14 10:03:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:31,361 INFO L225 Difference]: With dead ends: 7035 [2020-10-14 10:03:31,362 INFO L226 Difference]: Without dead ends: 3783 [2020-10-14 10:03:31,365 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 10:03:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2020-10-14 10:03:31,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3271. [2020-10-14 10:03:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3271 states. [2020-10-14 10:03:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 5310 transitions. [2020-10-14 10:03:31,459 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 5310 transitions. Word has length 198 [2020-10-14 10:03:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:31,460 INFO L479 AbstractCegarLoop]: Abstraction has 3271 states and 5310 transitions. [2020-10-14 10:03:31,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 5310 transitions. [2020-10-14 10:03:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 10:03:31,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:31,463 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:31,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:03:31,463 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:31,464 INFO L82 PathProgramCache]: Analyzing trace with hash -336035072, now seen corresponding path program 1 times [2020-10-14 10:03:31,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:31,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239206004] [2020-10-14 10:03:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:31,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:31,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:32,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:36,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:36,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 10:03:36,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:03:36,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:36,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:03:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 10:03:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:36,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:36,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:36,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:36,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:36,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:03:36,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:36,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:36,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 10:03:36,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239206004] [2020-10-14 10:03:36,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:36,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:36,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721015004] [2020-10-14 10:03:36,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:36,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:36,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:36,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:36,570 INFO L87 Difference]: Start difference. First operand 3271 states and 5310 transitions. Second operand 5 states. [2020-10-14 10:03:37,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:37,511 INFO L93 Difference]: Finished difference Result 7005 states and 11274 transitions. [2020-10-14 10:03:37,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:37,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-14 10:03:37,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:37,517 INFO L225 Difference]: With dead ends: 7005 [2020-10-14 10:03:37,517 INFO L226 Difference]: Without dead ends: 3753 [2020-10-14 10:03:37,520 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 10:03:37,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2020-10-14 10:03:37,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3301. [2020-10-14 10:03:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3301 states. [2020-10-14 10:03:37,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 5360 transitions. [2020-10-14 10:03:37,599 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 5360 transitions. Word has length 198 [2020-10-14 10:03:37,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:37,600 INFO L479 AbstractCegarLoop]: Abstraction has 3301 states and 5360 transitions. [2020-10-14 10:03:37,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:37,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 5360 transitions. [2020-10-14 10:03:37,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 10:03:37,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:37,603 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:37,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:03:37,604 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:37,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1619545070, now seen corresponding path program 1 times [2020-10-14 10:03:37,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:37,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413156581] [2020-10-14 10:03:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:37,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:37,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:37,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:40,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:42,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:42,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 10:03:42,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 10:03:42,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:42,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:03:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-14 10:03:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:03:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:42,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:42,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:42,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:42,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:42,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:42,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:03:42,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:42,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:42,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-14 10:03:42,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413156581] [2020-10-14 10:03:42,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:42,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:03:42,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750397291] [2020-10-14 10:03:42,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:03:42,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:42,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:03:42,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:42,826 INFO L87 Difference]: Start difference. First operand 3301 states and 5360 transitions. Second operand 6 states. [2020-10-14 10:03:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:43,667 INFO L93 Difference]: Finished difference Result 6948 states and 11236 transitions. [2020-10-14 10:03:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 10:03:43,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2020-10-14 10:03:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:43,672 INFO L225 Difference]: With dead ends: 6948 [2020-10-14 10:03:43,673 INFO L226 Difference]: Without dead ends: 3666 [2020-10-14 10:03:43,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:03:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2020-10-14 10:03:43,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3496. [2020-10-14 10:03:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3496 states. [2020-10-14 10:03:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 5685 transitions. [2020-10-14 10:03:43,775 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 5685 transitions. Word has length 199 [2020-10-14 10:03:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:43,775 INFO L479 AbstractCegarLoop]: Abstraction has 3496 states and 5685 transitions. [2020-10-14 10:03:43,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:03:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 5685 transitions. [2020-10-14 10:03:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 10:03:43,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:43,779 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:43,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:03:43,779 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:43,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:43,780 INFO L82 PathProgramCache]: Analyzing trace with hash -371218907, now seen corresponding path program 1 times [2020-10-14 10:03:43,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:43,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139651660] [2020-10-14 10:03:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:43,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:43,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:48,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:48,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 10:03:48,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:03:48,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 10:03:48,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:48,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:48,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:48,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-14 10:03:48,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:03:48,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:48,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:48,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:48,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:48,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:48,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:48,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:48,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:48,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-14 10:03:48,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139651660] [2020-10-14 10:03:48,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:48,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:48,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108034005] [2020-10-14 10:03:48,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:48,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:48,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:48,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:48,943 INFO L87 Difference]: Start difference. First operand 3496 states and 5685 transitions. Second operand 5 states. [2020-10-14 10:03:49,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:49,940 INFO L93 Difference]: Finished difference Result 7463 states and 11971 transitions. [2020-10-14 10:03:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:49,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-14 10:03:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:49,945 INFO L225 Difference]: With dead ends: 7463 [2020-10-14 10:03:49,945 INFO L226 Difference]: Without dead ends: 3966 [2020-10-14 10:03:49,949 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 10:03:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3966 states. [2020-10-14 10:03:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3966 to 3071. [2020-10-14 10:03:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3071 states. [2020-10-14 10:03:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 4920 transitions. [2020-10-14 10:03:50,028 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 4920 transitions. Word has length 199 [2020-10-14 10:03:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:50,029 INFO L479 AbstractCegarLoop]: Abstraction has 3071 states and 4920 transitions. [2020-10-14 10:03:50,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 4920 transitions. [2020-10-14 10:03:50,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 10:03:50,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:50,033 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:03:50,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 10:03:50,034 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:50,034 INFO L82 PathProgramCache]: Analyzing trace with hash 498965430, now seen corresponding path program 1 times [2020-10-14 10:03:50,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:50,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985851581] [2020-10-14 10:03:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:50,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:50,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 10:03:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 10:03:55,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:55,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-14 10:03:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:03:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:55,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:55,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:55,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:55,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:55,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:55,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-14 10:03:55,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985851581] [2020-10-14 10:03:55,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:55,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:55,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717099516] [2020-10-14 10:03:55,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:55,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:55,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:55,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:55,166 INFO L87 Difference]: Start difference. First operand 3071 states and 4920 transitions. Second operand 5 states. [2020-10-14 10:03:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:56,248 INFO L93 Difference]: Finished difference Result 7120 states and 11341 transitions. [2020-10-14 10:03:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:56,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-14 10:03:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:56,255 INFO L225 Difference]: With dead ends: 7120 [2020-10-14 10:03:56,255 INFO L226 Difference]: Without dead ends: 4068 [2020-10-14 10:03:56,258 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 10:03:56,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2020-10-14 10:03:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 3496. [2020-10-14 10:03:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3496 states. [2020-10-14 10:03:56,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 5705 transitions. [2020-10-14 10:03:56,372 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 5705 transitions. Word has length 201 [2020-10-14 10:03:56,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:56,373 INFO L479 AbstractCegarLoop]: Abstraction has 3496 states and 5705 transitions. [2020-10-14 10:03:56,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 5705 transitions. [2020-10-14 10:03:56,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 10:03:56,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:56,377 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:03:56,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 10:03:56,377 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:56,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:56,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1719095522, now seen corresponding path program 1 times [2020-10-14 10:03:56,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:56,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765842744] [2020-10-14 10:03:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:56,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:01,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 10:04:01,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 10:04:01,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:01,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-14 10:04:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:04:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:01,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:01,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:01,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:01,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:01,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:01,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:01,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-14 10:04:01,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765842744] [2020-10-14 10:04:01,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:01,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:01,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904944319] [2020-10-14 10:04:01,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:01,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:01,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:01,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:01,539 INFO L87 Difference]: Start difference. First operand 3496 states and 5705 transitions. Second operand 5 states. [2020-10-14 10:04:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:02,593 INFO L93 Difference]: Finished difference Result 7513 states and 12083 transitions. [2020-10-14 10:04:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:02,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-14 10:04:02,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:02,599 INFO L225 Difference]: With dead ends: 7513 [2020-10-14 10:04:02,599 INFO L226 Difference]: Without dead ends: 4016 [2020-10-14 10:04:02,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:02,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2020-10-14 10:04:02,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3286. [2020-10-14 10:04:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3286 states. [2020-10-14 10:04:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 5295 transitions. [2020-10-14 10:04:02,691 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 5295 transitions. Word has length 202 [2020-10-14 10:04:02,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:02,691 INFO L479 AbstractCegarLoop]: Abstraction has 3286 states and 5295 transitions. [2020-10-14 10:04:02,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:02,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 5295 transitions. [2020-10-14 10:04:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 10:04:02,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:02,695 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:02,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 10:04:02,695 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:02,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:02,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1716210611, now seen corresponding path program 1 times [2020-10-14 10:04:02,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:02,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67968623] [2020-10-14 10:04:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:02,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:02,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:02,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:04,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:04,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:07,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:07,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 10:04:07,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:07,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 10:04:07,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:07,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-14 10:04:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:04:07,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:07,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:07,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:07,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:07,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:07,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:07,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:07,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:07,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-14 10:04:07,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67968623] [2020-10-14 10:04:07,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:07,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:07,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113382752] [2020-10-14 10:04:07,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:07,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:07,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:07,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:07,829 INFO L87 Difference]: Start difference. First operand 3286 states and 5295 transitions. Second operand 5 states. [2020-10-14 10:04:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:08,946 INFO L93 Difference]: Finished difference Result 7550 states and 12081 transitions. [2020-10-14 10:04:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:08,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-14 10:04:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:08,952 INFO L225 Difference]: With dead ends: 7550 [2020-10-14 10:04:08,952 INFO L226 Difference]: Without dead ends: 4283 [2020-10-14 10:04:08,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:08,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2020-10-14 10:04:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 3711. [2020-10-14 10:04:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3711 states. [2020-10-14 10:04:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 6070 transitions. [2020-10-14 10:04:09,058 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 6070 transitions. Word has length 206 [2020-10-14 10:04:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:09,059 INFO L479 AbstractCegarLoop]: Abstraction has 3711 states and 6070 transitions. [2020-10-14 10:04:09,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:09,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 6070 transitions. [2020-10-14 10:04:09,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 10:04:09,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:09,065 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:09,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 10:04:09,065 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:09,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:09,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1670076057, now seen corresponding path program 1 times [2020-10-14 10:04:09,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:09,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665266128] [2020-10-14 10:04:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:09,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:09,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:14,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:14,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 10:04:14,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:14,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 10:04:14,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:14,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-14 10:04:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:04:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:14,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:14,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:14,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:14,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:14,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:14,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:14,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:14,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-14 10:04:14,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665266128] [2020-10-14 10:04:14,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:14,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:14,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552116443] [2020-10-14 10:04:14,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:14,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:14,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:14,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:14,195 INFO L87 Difference]: Start difference. First operand 3711 states and 6070 transitions. Second operand 5 states. [2020-10-14 10:04:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:15,254 INFO L93 Difference]: Finished difference Result 7943 states and 12813 transitions. [2020-10-14 10:04:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:15,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-14 10:04:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:15,260 INFO L225 Difference]: With dead ends: 7943 [2020-10-14 10:04:15,261 INFO L226 Difference]: Without dead ends: 4231 [2020-10-14 10:04:15,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:15,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2020-10-14 10:04:15,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 3286. [2020-10-14 10:04:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3286 states. [2020-10-14 10:04:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 5295 transitions. [2020-10-14 10:04:15,363 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 5295 transitions. Word has length 207 [2020-10-14 10:04:15,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:15,363 INFO L479 AbstractCegarLoop]: Abstraction has 3286 states and 5295 transitions. [2020-10-14 10:04:15,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 5295 transitions. [2020-10-14 10:04:15,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 10:04:15,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:15,368 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:15,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 10:04:15,369 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:15,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:15,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1300158880, now seen corresponding path program 1 times [2020-10-14 10:04:15,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:15,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220602654] [2020-10-14 10:04:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:15,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:17,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:17,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:20,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:20,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 10:04:20,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:20,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 10:04:20,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:20,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-14 10:04:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:04:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:20,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:20,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:20,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:20,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:20,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:20,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-14 10:04:20,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220602654] [2020-10-14 10:04:20,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:20,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:20,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195591345] [2020-10-14 10:04:20,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:20,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:20,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:20,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:20,547 INFO L87 Difference]: Start difference. First operand 3286 states and 5295 transitions. Second operand 5 states. [2020-10-14 10:04:21,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:21,623 INFO L93 Difference]: Finished difference Result 7550 states and 12081 transitions. [2020-10-14 10:04:21,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:21,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-14 10:04:21,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:21,629 INFO L225 Difference]: With dead ends: 7550 [2020-10-14 10:04:21,629 INFO L226 Difference]: Without dead ends: 4283 [2020-10-14 10:04:21,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2020-10-14 10:04:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 3711. [2020-10-14 10:04:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3711 states. [2020-10-14 10:04:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 6070 transitions. [2020-10-14 10:04:21,737 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 6070 transitions. Word has length 209 [2020-10-14 10:04:21,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:21,738 INFO L479 AbstractCegarLoop]: Abstraction has 3711 states and 6070 transitions. [2020-10-14 10:04:21,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 6070 transitions. [2020-10-14 10:04:21,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 10:04:21,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:21,742 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:21,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 10:04:21,742 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:21,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:21,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1657374284, now seen corresponding path program 1 times [2020-10-14 10:04:21,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:21,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376670152] [2020-10-14 10:04:21,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:21,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking...