/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=BIGGEST --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.08.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:53:25,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:53:25,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:53:25,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:53:25,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:53:25,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:53:25,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:53:25,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:53:25,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:53:25,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:53:25,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:53:25,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:53:25,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:53:25,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:53:25,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:53:25,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:53:25,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:53:25,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:53:25,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:53:25,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:53:25,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:53:25,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:53:25,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:53:25,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:53:25,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:53:25,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:53:25,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:53:25,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:53:25,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:53:25,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:53:25,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:53:25,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:53:25,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:53:25,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:53:25,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:53:25,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:53:25,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:53:25,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:53:25,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:53:25,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:53:25,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:53:25,266 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 [2020-10-12 20:53:25,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:53:25,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:53:25,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:53:25,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:53:25,319 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:53:25,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:53:25,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:53:25,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:53:25,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:53:25,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:53:25,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:53:25,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:53:25,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:53:25,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:53:25,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:53:25,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:53:25,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:53:25,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:53:25,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:53:25,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:53:25,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:53:25,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:53:25,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:53:25,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:53:25,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:53:25,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:53:25,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:53:25,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:53:25,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:53:25,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:53:25,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:53:25,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:53:25,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:53:25,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:53:25,640 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:53:25,640 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.08.i.cil-1.c [2020-10-12 20:53:25,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1de0af347/8a971cee8aee493093ccbc6625cfeab9/FLAG876f988f8 [2020-10-12 20:53:26,441 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:53:26,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.08.i.cil-1.c [2020-10-12 20:53:26,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1de0af347/8a971cee8aee493093ccbc6625cfeab9/FLAG876f988f8 [2020-10-12 20:53:26,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1de0af347/8a971cee8aee493093ccbc6625cfeab9 [2020-10-12 20:53:26,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:53:26,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:53:26,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:53:26,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:53:26,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:53:26,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:53:26" (1/1) ... [2020-10-12 20:53:26,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b5b388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:26, skipping insertion in model container [2020-10-12 20:53:26,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:53:26" (1/1) ... [2020-10-12 20:53:26,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:53:26,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:53:27,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:53:27,439 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:53:27,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:53:27,634 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:53:27,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:27 WrapperNode [2020-10-12 20:53:27,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:53:27,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:53:27,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:53:27,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:53:27,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:27" (1/1) ... [2020-10-12 20:53:27,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:27" (1/1) ... [2020-10-12 20:53:27,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:27" (1/1) ... [2020-10-12 20:53:27,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:27" (1/1) ... [2020-10-12 20:53:27,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:27" (1/1) ... [2020-10-12 20:53:27,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:27" (1/1) ... [2020-10-12 20:53:27,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:27" (1/1) ... [2020-10-12 20:53:27,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:53:27,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:53:27,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:53:27,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:53:27,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:27" (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 [2020-10-12 20:53:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:53:27,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:53:27,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:53:27,909 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:53:27,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:53:27,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:53:27,910 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:53:27,910 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:53:27,910 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:53:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:53:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:53:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:53:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:53:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:53:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:53:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:53:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:53:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:53:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:53:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:53:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:53:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:53:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:53:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:53:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:53:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:53:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:53:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:53:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:53:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:53:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:53:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:53:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:53:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:53:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:53:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:53:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:53:28,350 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:53:29,008 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:53:29,009 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:53:29,032 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:53:29,032 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:53:29,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:29 BoogieIcfgContainer [2020-10-12 20:53:29,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:53:29,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:53:29,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:53:29,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:53:29,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:53:26" (1/3) ... [2020-10-12 20:53:29,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a19546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:29, skipping insertion in model container [2020-10-12 20:53:29,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:27" (2/3) ... [2020-10-12 20:53:29,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a19546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:29, skipping insertion in model container [2020-10-12 20:53:29,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:29" (3/3) ... [2020-10-12 20:53:29,048 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.08.i.cil-1.c [2020-10-12 20:53:29,062 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:53:29,075 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:53:29,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:53:29,133 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:53:29,133 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:53:29,134 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:53:29,134 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:53:29,134 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:53:29,134 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:53:29,134 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:53:29,135 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:53:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-10-12 20:53:29,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 20:53:29,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:29,185 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] [2020-10-12 20:53:29,186 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:29,193 INFO L82 PathProgramCache]: Analyzing trace with hash -118544736, now seen corresponding path program 1 times [2020-10-12 20:53:29,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:29,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266226197] [2020-10-12 20:53:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:29,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:30,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 20:53:30,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1278 [2020-10-12 20:53:30,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:30,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:30,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:53:30,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:53:30,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:30,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:30,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:30,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:53:30,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:30,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:30,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:30,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:30,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266226197] [2020-10-12 20:53:30,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:30,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:30,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048262744] [2020-10-12 20:53:30,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:30,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:30,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:30,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:30,915 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 5 states. [2020-10-12 20:53:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:32,311 INFO L93 Difference]: Finished difference Result 410 states and 692 transitions. [2020-10-12 20:53:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:32,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-12 20:53:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:32,332 INFO L225 Difference]: With dead ends: 410 [2020-10-12 20:53:32,332 INFO L226 Difference]: Without dead ends: 240 [2020-10-12 20:53:32,337 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 [2020-10-12 20:53:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-12 20:53:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 173. [2020-10-12 20:53:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-12 20:53:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 274 transitions. [2020-10-12 20:53:32,397 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 274 transitions. Word has length 49 [2020-10-12 20:53:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:32,398 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 274 transitions. [2020-10-12 20:53:32,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 274 transitions. [2020-10-12 20:53:32,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 20:53:32,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:32,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:32,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:53:32,402 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:32,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1330880482, now seen corresponding path program 1 times [2020-10-12 20:53:32,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:32,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528872164] [2020-10-12 20:53:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:32,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:32,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:32,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:33,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 20:53:33,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-12 20:53:33,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:53:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:33,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:33,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:33,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:33,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:33,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:33,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528872164] [2020-10-12 20:53:33,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:33,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:33,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264370915] [2020-10-12 20:53:33,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:33,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:33,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:33,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:33,201 INFO L87 Difference]: Start difference. First operand 173 states and 274 transitions. Second operand 5 states. [2020-10-12 20:53:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:33,891 INFO L93 Difference]: Finished difference Result 318 states and 493 transitions. [2020-10-12 20:53:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:33,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-12 20:53:33,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:33,895 INFO L225 Difference]: With dead ends: 318 [2020-10-12 20:53:33,895 INFO L226 Difference]: Without dead ends: 170 [2020-10-12 20:53:33,897 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 [2020-10-12 20:53:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-12 20:53:33,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 153. [2020-10-12 20:53:33,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-12 20:53:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 234 transitions. [2020-10-12 20:53:33,910 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 234 transitions. Word has length 50 [2020-10-12 20:53:33,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:33,910 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 234 transitions. [2020-10-12 20:53:33,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:33,911 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 234 transitions. [2020-10-12 20:53:33,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 20:53:33,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:33,913 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:53:33,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:53:33,914 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:33,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:33,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1007372044, now seen corresponding path program 1 times [2020-10-12 20:53:33,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:33,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748729630] [2020-10-12 20:53:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:33,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:34,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:35,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:35,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 20:53:35,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:35,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-10-12 20:53:35,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:53:35,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:35,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:35,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:35,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:53:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:35,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748729630] [2020-10-12 20:53:35,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:35,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:35,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070930465] [2020-10-12 20:53:35,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:35,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:35,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:35,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:35,121 INFO L87 Difference]: Start difference. First operand 153 states and 234 transitions. Second operand 5 states. [2020-10-12 20:53:35,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:35,786 INFO L93 Difference]: Finished difference Result 298 states and 453 transitions. [2020-10-12 20:53:35,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:35,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-12 20:53:35,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:35,790 INFO L225 Difference]: With dead ends: 298 [2020-10-12 20:53:35,791 INFO L226 Difference]: Without dead ends: 170 [2020-10-12 20:53:35,795 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 [2020-10-12 20:53:35,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-12 20:53:35,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 153. [2020-10-12 20:53:35,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-12 20:53:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 233 transitions. [2020-10-12 20:53:35,819 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 233 transitions. Word has length 62 [2020-10-12 20:53:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:35,820 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 233 transitions. [2020-10-12 20:53:35,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:35,823 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 233 transitions. [2020-10-12 20:53:35,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 20:53:35,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:35,828 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:35,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:53:35,828 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:35,829 INFO L82 PathProgramCache]: Analyzing trace with hash 444996960, now seen corresponding path program 1 times [2020-10-12 20:53:35,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:35,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006734781] [2020-10-12 20:53:35,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:35,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:36,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:38,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:40,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:53:40,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4740 [2020-10-12 20:53:40,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:53:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:53:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:40,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:40,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:40,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:40,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:40,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:40,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:40,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:40,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006734781] [2020-10-12 20:53:40,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:40,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:40,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815438558] [2020-10-12 20:53:40,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:40,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:40,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:40,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:40,754 INFO L87 Difference]: Start difference. First operand 153 states and 233 transitions. Second operand 5 states. [2020-10-12 20:53:41,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:41,428 INFO L93 Difference]: Finished difference Result 298 states and 452 transitions. [2020-10-12 20:53:41,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:41,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-12 20:53:41,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:41,431 INFO L225 Difference]: With dead ends: 298 [2020-10-12 20:53:41,431 INFO L226 Difference]: Without dead ends: 170 [2020-10-12 20:53:41,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:41,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-12 20:53:41,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 163. [2020-10-12 20:53:41,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-12 20:53:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 245 transitions. [2020-10-12 20:53:41,458 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 245 transitions. Word has length 63 [2020-10-12 20:53:41,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:41,460 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 245 transitions. [2020-10-12 20:53:41,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 245 transitions. [2020-10-12 20:53:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 20:53:41,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:41,462 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:53:41,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:53:41,463 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:41,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:41,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1741546391, now seen corresponding path program 1 times [2020-10-12 20:53:41,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:41,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284446101] [2020-10-12 20:53:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:41,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:42,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:53:42,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-12 20:53:42,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:53:42,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:42,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:42,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:42,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:42,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:42,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:53:42,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:42,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:42,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284446101] [2020-10-12 20:53:42,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:42,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:42,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022006359] [2020-10-12 20:53:42,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:42,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:42,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:42,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:42,485 INFO L87 Difference]: Start difference. First operand 163 states and 245 transitions. Second operand 5 states. [2020-10-12 20:53:43,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:43,127 INFO L93 Difference]: Finished difference Result 296 states and 449 transitions. [2020-10-12 20:53:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:43,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-12 20:53:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:43,129 INFO L225 Difference]: With dead ends: 296 [2020-10-12 20:53:43,130 INFO L226 Difference]: Without dead ends: 168 [2020-10-12 20:53:43,131 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 [2020-10-12 20:53:43,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-12 20:53:43,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 163. [2020-10-12 20:53:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-12 20:53:43,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 244 transitions. [2020-10-12 20:53:43,147 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 244 transitions. Word has length 63 [2020-10-12 20:53:43,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:43,148 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 244 transitions. [2020-10-12 20:53:43,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:43,149 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 244 transitions. [2020-10-12 20:53:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 20:53:43,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:43,151 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:53:43,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:53:43,154 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:43,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:43,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1673986390, now seen corresponding path program 1 times [2020-10-12 20:53:43,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:43,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391833309] [2020-10-12 20:53:43,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:43,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:53:43,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-12 20:53:43,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:43,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:43,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:53:43,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 20:53:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:43,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:43,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:43,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:43,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:43,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:43,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:43,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391833309] [2020-10-12 20:53:43,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:43,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:43,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844839126] [2020-10-12 20:53:43,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:43,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:43,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:43,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:43,696 INFO L87 Difference]: Start difference. First operand 163 states and 244 transitions. Second operand 5 states. [2020-10-12 20:53:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:44,307 INFO L93 Difference]: Finished difference Result 295 states and 447 transitions. [2020-10-12 20:53:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:44,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-12 20:53:44,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:44,309 INFO L225 Difference]: With dead ends: 295 [2020-10-12 20:53:44,309 INFO L226 Difference]: Without dead ends: 167 [2020-10-12 20:53:44,310 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 [2020-10-12 20:53:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-12 20:53:44,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2020-10-12 20:53:44,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-12 20:53:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 243 transitions. [2020-10-12 20:53:44,317 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 243 transitions. Word has length 63 [2020-10-12 20:53:44,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:44,318 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 243 transitions. [2020-10-12 20:53:44,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:44,318 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 243 transitions. [2020-10-12 20:53:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:53:44,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:44,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:44,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:53:44,320 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:44,321 INFO L82 PathProgramCache]: Analyzing trace with hash -905229413, now seen corresponding path program 1 times [2020-10-12 20:53:44,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:44,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539171471] [2020-10-12 20:53:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:44,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:44,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:44,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:44,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:46,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:49,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:49,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:53:49,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:49,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:53:49,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:53:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:53:49,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:53:49,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:49,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:49,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:49,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:53:49,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:49,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:49,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539171471] [2020-10-12 20:53:49,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:49,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:53:49,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383624090] [2020-10-12 20:53:49,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:53:49,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:49,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:53:49,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:53:49,669 INFO L87 Difference]: Start difference. First operand 163 states and 243 transitions. Second operand 8 states. [2020-10-12 20:53:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:51,128 INFO L93 Difference]: Finished difference Result 440 states and 669 transitions. [2020-10-12 20:53:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:53:51,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-12 20:53:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:51,131 INFO L225 Difference]: With dead ends: 440 [2020-10-12 20:53:51,132 INFO L226 Difference]: Without dead ends: 312 [2020-10-12 20:53:51,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:53:51,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-12 20:53:51,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 264. [2020-10-12 20:53:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-12 20:53:51,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 405 transitions. [2020-10-12 20:53:51,144 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 405 transitions. Word has length 64 [2020-10-12 20:53:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:51,144 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 405 transitions. [2020-10-12 20:53:51,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:53:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 405 transitions. [2020-10-12 20:53:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 20:53:51,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:51,146 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] [2020-10-12 20:53:51,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:53:51,146 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:51,146 INFO L82 PathProgramCache]: Analyzing trace with hash -215510621, now seen corresponding path program 1 times [2020-10-12 20:53:51,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:51,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975991033] [2020-10-12 20:53:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:51,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:53:51,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-12 20:53:51,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:53:51,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:51,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:51,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:51,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:51,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:51,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:51,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:51,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975991033] [2020-10-12 20:53:51,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:51,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:51,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096509868] [2020-10-12 20:53:51,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:51,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:51,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:51,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:51,846 INFO L87 Difference]: Start difference. First operand 264 states and 405 transitions. Second operand 5 states. [2020-10-12 20:53:52,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:52,656 INFO L93 Difference]: Finished difference Result 679 states and 1058 transitions. [2020-10-12 20:53:52,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:52,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-12 20:53:52,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:52,660 INFO L225 Difference]: With dead ends: 679 [2020-10-12 20:53:52,660 INFO L226 Difference]: Without dead ends: 450 [2020-10-12 20:53:52,661 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 [2020-10-12 20:53:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-12 20:53:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 342. [2020-10-12 20:53:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-12 20:53:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 549 transitions. [2020-10-12 20:53:52,677 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 549 transitions. Word has length 66 [2020-10-12 20:53:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:52,677 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 549 transitions. [2020-10-12 20:53:52,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 549 transitions. [2020-10-12 20:53:52,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:53:52,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:52,679 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:52,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:53:52,679 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:52,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:52,680 INFO L82 PathProgramCache]: Analyzing trace with hash -41855621, now seen corresponding path program 1 times [2020-10-12 20:53:52,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:52,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219166409] [2020-10-12 20:53:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:52,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:53,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:53:53,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:53,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-12 20:53:53,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:53:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:53,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:53,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:53,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:53,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:53,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219166409] [2020-10-12 20:53:53,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:53,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:53,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468325833] [2020-10-12 20:53:53,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:53,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:53,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:53,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:53,258 INFO L87 Difference]: Start difference. First operand 342 states and 549 transitions. Second operand 5 states. [2020-10-12 20:53:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:54,112 INFO L93 Difference]: Finished difference Result 743 states and 1179 transitions. [2020-10-12 20:53:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:54,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-12 20:53:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:54,118 INFO L225 Difference]: With dead ends: 743 [2020-10-12 20:53:54,118 INFO L226 Difference]: Without dead ends: 436 [2020-10-12 20:53:54,119 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 [2020-10-12 20:53:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-12 20:53:54,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 342. [2020-10-12 20:53:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-12 20:53:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 549 transitions. [2020-10-12 20:53:54,140 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 549 transitions. Word has length 67 [2020-10-12 20:53:54,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:54,142 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 549 transitions. [2020-10-12 20:53:54,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:54,142 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 549 transitions. [2020-10-12 20:53:54,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:53:54,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:54,144 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:54,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:53:54,144 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:54,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:54,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1119989263, now seen corresponding path program 1 times [2020-10-12 20:53:54,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:54,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849076728] [2020-10-12 20:53:54,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:54,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:59,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:59,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:53:59,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:59,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 20:53:59,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:53:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:53:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:53:59,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:59,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:59,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:59,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:59,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:59,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:59,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:59,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:59,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849076728] [2020-10-12 20:53:59,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:59,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:53:59,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338321773] [2020-10-12 20:53:59,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:53:59,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:59,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:53:59,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:59,336 INFO L87 Difference]: Start difference. First operand 342 states and 549 transitions. Second operand 6 states. [2020-10-12 20:53:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:59,987 INFO L93 Difference]: Finished difference Result 557 states and 888 transitions. [2020-10-12 20:53:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:53:59,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-12 20:53:59,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:59,991 INFO L225 Difference]: With dead ends: 557 [2020-10-12 20:53:59,991 INFO L226 Difference]: Without dead ends: 359 [2020-10-12 20:53:59,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:53:59,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-12 20:54:00,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 349. [2020-10-12 20:54:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-12 20:54:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 557 transitions. [2020-10-12 20:54:00,003 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 557 transitions. Word has length 77 [2020-10-12 20:54:00,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:00,004 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 557 transitions. [2020-10-12 20:54:00,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:54:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 557 transitions. [2020-10-12 20:54:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:54:00,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:00,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:00,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:54:00,006 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:00,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:00,006 INFO L82 PathProgramCache]: Analyzing trace with hash 329161605, now seen corresponding path program 1 times [2020-10-12 20:54:00,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:00,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200038566] [2020-10-12 20:54:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:00,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:05,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:05,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:54:05,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:05,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 20:54:05,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:54:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:05,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:05,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:05,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:05,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:05,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:54:05,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:05,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200038566] [2020-10-12 20:54:05,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:05,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:05,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639227019] [2020-10-12 20:54:05,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:05,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:05,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:05,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:05,154 INFO L87 Difference]: Start difference. First operand 349 states and 557 transitions. Second operand 5 states. [2020-10-12 20:54:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:05,783 INFO L93 Difference]: Finished difference Result 559 states and 888 transitions. [2020-10-12 20:54:05,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:05,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-12 20:54:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:05,786 INFO L225 Difference]: With dead ends: 559 [2020-10-12 20:54:05,786 INFO L226 Difference]: Without dead ends: 353 [2020-10-12 20:54:05,787 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 [2020-10-12 20:54:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-12 20:54:05,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2020-10-12 20:54:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-12 20:54:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 556 transitions. [2020-10-12 20:54:05,799 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 556 transitions. Word has length 77 [2020-10-12 20:54:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:05,799 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 556 transitions. [2020-10-12 20:54:05,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 556 transitions. [2020-10-12 20:54:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:54:05,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:05,801 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:05,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:54:05,801 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:05,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2010437816, now seen corresponding path program 1 times [2020-10-12 20:54:05,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:05,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896015656] [2020-10-12 20:54:05,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:05,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:05,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:05,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:06,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:08,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:10,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:10,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:54:10,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4508 [2020-10-12 20:54:10,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:54:10,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:10,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:10,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:10,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:10,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:10,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:10,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:10,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896015656] [2020-10-12 20:54:10,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:10,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:10,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558038602] [2020-10-12 20:54:10,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:10,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:10,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:10,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:10,404 INFO L87 Difference]: Start difference. First operand 349 states and 556 transitions. Second operand 5 states. [2020-10-12 20:54:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:11,165 INFO L93 Difference]: Finished difference Result 559 states and 887 transitions. [2020-10-12 20:54:11,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:11,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:54:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:11,168 INFO L225 Difference]: With dead ends: 559 [2020-10-12 20:54:11,169 INFO L226 Difference]: Without dead ends: 353 [2020-10-12 20:54:11,170 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 [2020-10-12 20:54:11,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-12 20:54:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2020-10-12 20:54:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-12 20:54:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 555 transitions. [2020-10-12 20:54:11,181 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 555 transitions. Word has length 78 [2020-10-12 20:54:11,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:11,182 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 555 transitions. [2020-10-12 20:54:11,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 555 transitions. [2020-10-12 20:54:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:54:11,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:11,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:11,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:54:11,184 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:11,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1232877162, now seen corresponding path program 1 times [2020-10-12 20:54:11,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:11,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874674060] [2020-10-12 20:54:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:15,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:15,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:54:15,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:15,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4694 [2020-10-12 20:54:15,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:15,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:15,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:15,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:54:15,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:15,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:15,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:15,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:15,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:15,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:15,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:15,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874674060] [2020-10-12 20:54:15,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:15,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:15,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38747683] [2020-10-12 20:54:15,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:15,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:15,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:15,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:15,980 INFO L87 Difference]: Start difference. First operand 349 states and 555 transitions. Second operand 5 states. [2020-10-12 20:54:16,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:16,874 INFO L93 Difference]: Finished difference Result 559 states and 886 transitions. [2020-10-12 20:54:16,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:16,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:54:16,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:16,878 INFO L225 Difference]: With dead ends: 559 [2020-10-12 20:54:16,878 INFO L226 Difference]: Without dead ends: 353 [2020-10-12 20:54:16,880 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 [2020-10-12 20:54:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-12 20:54:16,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2020-10-12 20:54:16,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-12 20:54:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 554 transitions. [2020-10-12 20:54:16,895 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 554 transitions. Word has length 79 [2020-10-12 20:54:16,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:16,896 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 554 transitions. [2020-10-12 20:54:16,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:16,896 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 554 transitions. [2020-10-12 20:54:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:54:16,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:16,898 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:54:16,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:54:16,899 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:16,899 INFO L82 PathProgramCache]: Analyzing trace with hash -172877591, now seen corresponding path program 1 times [2020-10-12 20:54:16,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:16,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272895301] [2020-10-12 20:54:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:17,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:54:17,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:17,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-10-12 20:54:17,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:54:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:54:17,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:17,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:17,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:17,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:17,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:17,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:54:17,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272895301] [2020-10-12 20:54:17,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:17,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:17,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650676122] [2020-10-12 20:54:17,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:17,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:17,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:17,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:17,866 INFO L87 Difference]: Start difference. First operand 349 states and 554 transitions. Second operand 5 states. [2020-10-12 20:54:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:18,967 INFO L93 Difference]: Finished difference Result 641 states and 1012 transitions. [2020-10-12 20:54:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:18,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:54:18,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:18,971 INFO L225 Difference]: With dead ends: 641 [2020-10-12 20:54:18,971 INFO L226 Difference]: Without dead ends: 464 [2020-10-12 20:54:18,973 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 [2020-10-12 20:54:18,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-12 20:54:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 388. [2020-10-12 20:54:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-10-12 20:54:18,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 626 transitions. [2020-10-12 20:54:18,986 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 626 transitions. Word has length 79 [2020-10-12 20:54:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:18,987 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 626 transitions. [2020-10-12 20:54:18,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 626 transitions. [2020-10-12 20:54:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:54:18,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:18,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:18,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:54:18,993 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:18,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1783003357, now seen corresponding path program 1 times [2020-10-12 20:54:18,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:18,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900790168] [2020-10-12 20:54:18,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:19,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:21,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:24,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:54:24,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:54:24,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:54:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:24,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:24,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:24,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:24,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:24,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:24,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:24,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:54:24,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900790168] [2020-10-12 20:54:24,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:24,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:24,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074348351] [2020-10-12 20:54:24,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:24,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:24,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:24,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:24,111 INFO L87 Difference]: Start difference. First operand 388 states and 626 transitions. Second operand 5 states. [2020-10-12 20:54:24,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:24,956 INFO L93 Difference]: Finished difference Result 704 states and 1112 transitions. [2020-10-12 20:54:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:24,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:54:24,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:24,960 INFO L225 Difference]: With dead ends: 704 [2020-10-12 20:54:24,960 INFO L226 Difference]: Without dead ends: 478 [2020-10-12 20:54:24,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:24,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-10-12 20:54:24,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 397. [2020-10-12 20:54:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-12 20:54:24,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 635 transitions. [2020-10-12 20:54:24,974 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 635 transitions. Word has length 80 [2020-10-12 20:54:24,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:24,974 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 635 transitions. [2020-10-12 20:54:24,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:24,974 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 635 transitions. [2020-10-12 20:54:24,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:54:24,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:24,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:24,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:54:24,976 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:24,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:24,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1279768309, now seen corresponding path program 1 times [2020-10-12 20:54:24,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:24,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534645899] [2020-10-12 20:54:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:25,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:25,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:54:25,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-12 20:54:25,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:54:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:54:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:25,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:25,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:25,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:54:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:54:25,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534645899] [2020-10-12 20:54:25,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:25,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:25,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692425222] [2020-10-12 20:54:25,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:25,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:25,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:25,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:25,924 INFO L87 Difference]: Start difference. First operand 397 states and 635 transitions. Second operand 5 states. [2020-10-12 20:54:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:26,762 INFO L93 Difference]: Finished difference Result 664 states and 1051 transitions. [2020-10-12 20:54:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:26,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:54:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:26,765 INFO L225 Difference]: With dead ends: 664 [2020-10-12 20:54:26,765 INFO L226 Difference]: Without dead ends: 439 [2020-10-12 20:54:26,766 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 [2020-10-12 20:54:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-12 20:54:26,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 390. [2020-10-12 20:54:26,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-10-12 20:54:26,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 621 transitions. [2020-10-12 20:54:26,780 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 621 transitions. Word has length 80 [2020-10-12 20:54:26,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:26,780 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 621 transitions. [2020-10-12 20:54:26,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:26,780 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 621 transitions. [2020-10-12 20:54:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:54:26,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:26,782 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 20:54:26,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:54:26,782 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:26,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:26,783 INFO L82 PathProgramCache]: Analyzing trace with hash 392980589, now seen corresponding path program 1 times [2020-10-12 20:54:26,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:26,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123493277] [2020-10-12 20:54:26,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:26,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:27,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:54:27,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:27,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-12 20:54:27,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:27,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:27,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:54:27,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:54:27,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:27,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:27,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:27,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 20:54:27,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123493277] [2020-10-12 20:54:27,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:27,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:27,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171715404] [2020-10-12 20:54:27,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:27,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:27,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:27,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:27,245 INFO L87 Difference]: Start difference. First operand 390 states and 621 transitions. Second operand 5 states. [2020-10-12 20:54:28,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:28,241 INFO L93 Difference]: Finished difference Result 951 states and 1518 transitions. [2020-10-12 20:54:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:28,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:54:28,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:28,247 INFO L225 Difference]: With dead ends: 951 [2020-10-12 20:54:28,247 INFO L226 Difference]: Without dead ends: 586 [2020-10-12 20:54:28,249 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 [2020-10-12 20:54:28,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-10-12 20:54:28,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 470. [2020-10-12 20:54:28,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-12 20:54:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 767 transitions. [2020-10-12 20:54:28,264 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 767 transitions. Word has length 80 [2020-10-12 20:54:28,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:28,265 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 767 transitions. [2020-10-12 20:54:28,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:28,265 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 767 transitions. [2020-10-12 20:54:28,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:54:28,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:28,267 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 20:54:28,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:54:28,267 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:28,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:28,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1641502705, now seen corresponding path program 1 times [2020-10-12 20:54:28,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:28,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692864638] [2020-10-12 20:54:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:28,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:28,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:54:28,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:28,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-12 20:54:28,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:54:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:54:28,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:28,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:28,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:28,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:28,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:28,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:28,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:28,891 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 20:54:28,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692864638] [2020-10-12 20:54:28,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:28,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:28,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693263116] [2020-10-12 20:54:28,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:28,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:28,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:28,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:28,895 INFO L87 Difference]: Start difference. First operand 470 states and 767 transitions. Second operand 5 states. [2020-10-12 20:54:29,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:29,923 INFO L93 Difference]: Finished difference Result 1017 states and 1641 transitions. [2020-10-12 20:54:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:29,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:54:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:29,927 INFO L225 Difference]: With dead ends: 1017 [2020-10-12 20:54:29,927 INFO L226 Difference]: Without dead ends: 572 [2020-10-12 20:54:29,928 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 [2020-10-12 20:54:29,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-12 20:54:29,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 422. [2020-10-12 20:54:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-12 20:54:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 673 transitions. [2020-10-12 20:54:29,943 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 673 transitions. Word has length 81 [2020-10-12 20:54:29,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:29,943 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 673 transitions. [2020-10-12 20:54:29,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 673 transitions. [2020-10-12 20:54:29,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:54:29,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:29,945 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:29,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:54:29,945 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:29,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:29,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1370822271, now seen corresponding path program 1 times [2020-10-12 20:54:29,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:29,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776793871] [2020-10-12 20:54:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:29,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:34,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:54:34,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:54:34,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:54:34,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:34,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:54:34,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:54:34,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:34,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:35,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:35,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:35,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:35,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:35,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:35,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:35,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:35,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:35,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:35,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:35,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:54:35,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776793871] [2020-10-12 20:54:35,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:35,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:35,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064093644] [2020-10-12 20:54:35,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:35,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:35,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:35,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:35,074 INFO L87 Difference]: Start difference. First operand 422 states and 673 transitions. Second operand 5 states. [2020-10-12 20:54:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:35,997 INFO L93 Difference]: Finished difference Result 862 states and 1371 transitions. [2020-10-12 20:54:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:35,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:54:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:36,001 INFO L225 Difference]: With dead ends: 862 [2020-10-12 20:54:36,001 INFO L226 Difference]: Without dead ends: 618 [2020-10-12 20:54:36,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-12 20:54:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 422. [2020-10-12 20:54:36,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-12 20:54:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 669 transitions. [2020-10-12 20:54:36,019 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 669 transitions. Word has length 81 [2020-10-12 20:54:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:36,019 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 669 transitions. [2020-10-12 20:54:36,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 669 transitions. [2020-10-12 20:54:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:54:36,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:36,021 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:54:36,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:54:36,021 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:36,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:36,022 INFO L82 PathProgramCache]: Analyzing trace with hash 390016072, now seen corresponding path program 1 times [2020-10-12 20:54:36,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:36,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041200351] [2020-10-12 20:54:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:36,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:37,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:41,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:41,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:54:41,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:54:41,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:54:41,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:54:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 20:54:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:54:41,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:41,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:41,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:41,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:41,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:41,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:41,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:54:41,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041200351] [2020-10-12 20:54:41,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:41,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:54:41,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146314930] [2020-10-12 20:54:41,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:54:41,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:41,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:54:41,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:54:41,231 INFO L87 Difference]: Start difference. First operand 422 states and 669 transitions. Second operand 9 states. [2020-10-12 20:54:42,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:42,739 INFO L93 Difference]: Finished difference Result 887 states and 1398 transitions. [2020-10-12 20:54:42,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:54:42,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-12 20:54:42,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:42,743 INFO L225 Difference]: With dead ends: 887 [2020-10-12 20:54:42,744 INFO L226 Difference]: Without dead ends: 653 [2020-10-12 20:54:42,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:54:42,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-12 20:54:42,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 431. [2020-10-12 20:54:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-12 20:54:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 680 transitions. [2020-10-12 20:54:42,770 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 680 transitions. Word has length 82 [2020-10-12 20:54:42,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:42,770 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 680 transitions. [2020-10-12 20:54:42,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:54:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 680 transitions. [2020-10-12 20:54:42,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:54:42,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:42,772 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] [2020-10-12 20:54:42,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:54:42,773 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:42,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:42,773 INFO L82 PathProgramCache]: Analyzing trace with hash 755282652, now seen corresponding path program 1 times [2020-10-12 20:54:42,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:42,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11997146] [2020-10-12 20:54:42,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:43,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:43,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:54:43,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-12 20:54:43,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:54:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:43,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:43,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:43,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:43,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:43,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:43,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11997146] [2020-10-12 20:54:43,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:43,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:43,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992181527] [2020-10-12 20:54:43,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:43,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:43,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:43,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:43,076 INFO L87 Difference]: Start difference. First operand 431 states and 680 transitions. Second operand 5 states. [2020-10-12 20:54:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:44,120 INFO L93 Difference]: Finished difference Result 1024 states and 1621 transitions. [2020-10-12 20:54:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:44,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:54:44,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:44,127 INFO L225 Difference]: With dead ends: 1024 [2020-10-12 20:54:44,127 INFO L226 Difference]: Without dead ends: 617 [2020-10-12 20:54:44,129 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 [2020-10-12 20:54:44,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-12 20:54:44,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 511. [2020-10-12 20:54:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-12 20:54:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 824 transitions. [2020-10-12 20:54:44,146 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 824 transitions. Word has length 88 [2020-10-12 20:54:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:44,147 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 824 transitions. [2020-10-12 20:54:44,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 824 transitions. [2020-10-12 20:54:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:54:44,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:44,149 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] [2020-10-12 20:54:44,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:54:44,150 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:44,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:44,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1178929374, now seen corresponding path program 1 times [2020-10-12 20:54:44,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:44,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253288110] [2020-10-12 20:54:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:44,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:44,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:44,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:44,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:54:44,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:44,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-12 20:54:44,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:54:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:54:44,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:44,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:44,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:44,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:44,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:44,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:44,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:54:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:44,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253288110] [2020-10-12 20:54:44,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:44,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:44,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499307150] [2020-10-12 20:54:44,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:44,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:44,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:44,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:44,806 INFO L87 Difference]: Start difference. First operand 511 states and 824 transitions. Second operand 5 states. [2020-10-12 20:54:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:45,860 INFO L93 Difference]: Finished difference Result 1182 states and 1907 transitions. [2020-10-12 20:54:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:45,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:54:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:45,866 INFO L225 Difference]: With dead ends: 1182 [2020-10-12 20:54:45,866 INFO L226 Difference]: Without dead ends: 695 [2020-10-12 20:54:45,867 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 [2020-10-12 20:54:45,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-12 20:54:45,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 509. [2020-10-12 20:54:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-12 20:54:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 822 transitions. [2020-10-12 20:54:45,885 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 822 transitions. Word has length 88 [2020-10-12 20:54:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:45,886 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 822 transitions. [2020-10-12 20:54:45,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 822 transitions. [2020-10-12 20:54:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:54:45,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:45,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:45,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:54:45,888 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:45,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:45,889 INFO L82 PathProgramCache]: Analyzing trace with hash -914219408, now seen corresponding path program 1 times [2020-10-12 20:54:45,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:45,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378975936] [2020-10-12 20:54:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:47,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:47,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:54:47,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:47,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1797 [2020-10-12 20:54:47,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 20:54:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:54:47,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:47,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:47,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:47,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:47,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:47,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:47,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:47,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:47,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:47,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:47,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:47,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:47,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378975936] [2020-10-12 20:54:47,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:47,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:47,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976041902] [2020-10-12 20:54:47,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:47,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:47,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:47,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:47,766 INFO L87 Difference]: Start difference. First operand 509 states and 822 transitions. Second operand 5 states. [2020-10-12 20:54:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:48,738 INFO L93 Difference]: Finished difference Result 1178 states and 1903 transitions. [2020-10-12 20:54:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:48,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:54:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:48,742 INFO L225 Difference]: With dead ends: 1178 [2020-10-12 20:54:48,742 INFO L226 Difference]: Without dead ends: 693 [2020-10-12 20:54:48,743 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 [2020-10-12 20:54:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-10-12 20:54:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 509. [2020-10-12 20:54:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-12 20:54:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 822 transitions. [2020-10-12 20:54:48,761 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 822 transitions. Word has length 88 [2020-10-12 20:54:48,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:48,761 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 822 transitions. [2020-10-12 20:54:48,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:48,761 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 822 transitions. [2020-10-12 20:54:48,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:54:48,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:48,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:48,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:54:48,764 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:48,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:48,764 INFO L82 PathProgramCache]: Analyzing trace with hash -12035230, now seen corresponding path program 1 times [2020-10-12 20:54:48,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:48,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11510934] [2020-10-12 20:54:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:48,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:48,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:48,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:54:48,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:48,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-12 20:54:48,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:54:48,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:49,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:49,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:49,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:49,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:49,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:49,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:49,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11510934] [2020-10-12 20:54:49,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:49,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:49,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154240358] [2020-10-12 20:54:49,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:49,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:49,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:49,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:49,064 INFO L87 Difference]: Start difference. First operand 509 states and 822 transitions. Second operand 5 states. [2020-10-12 20:54:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:50,112 INFO L93 Difference]: Finished difference Result 1166 states and 1882 transitions. [2020-10-12 20:54:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:50,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:54:50,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:50,116 INFO L225 Difference]: With dead ends: 1166 [2020-10-12 20:54:50,116 INFO L226 Difference]: Without dead ends: 681 [2020-10-12 20:54:50,117 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 [2020-10-12 20:54:50,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-10-12 20:54:50,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 509. [2020-10-12 20:54:50,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-12 20:54:50,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 822 transitions. [2020-10-12 20:54:50,133 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 822 transitions. Word has length 89 [2020-10-12 20:54:50,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:50,133 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 822 transitions. [2020-10-12 20:54:50,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:50,133 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 822 transitions. [2020-10-12 20:54:50,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:54:50,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:50,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:50,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:54:50,135 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:50,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:50,137 INFO L82 PathProgramCache]: Analyzing trace with hash 236111264, now seen corresponding path program 1 times [2020-10-12 20:54:50,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:50,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853906760] [2020-10-12 20:54:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:50,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:50,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:50,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:50,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:54:50,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:50,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-12 20:54:50,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:54:50,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:50,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:50,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:50,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:50,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:50,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:50,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:50,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:50,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853906760] [2020-10-12 20:54:50,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:50,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:50,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361325756] [2020-10-12 20:54:50,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:50,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:50,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:50,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:50,672 INFO L87 Difference]: Start difference. First operand 509 states and 822 transitions. Second operand 5 states. [2020-10-12 20:54:51,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:51,433 INFO L93 Difference]: Finished difference Result 1088 states and 1758 transitions. [2020-10-12 20:54:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:51,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:54:51,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:51,436 INFO L225 Difference]: With dead ends: 1088 [2020-10-12 20:54:51,436 INFO L226 Difference]: Without dead ends: 603 [2020-10-12 20:54:51,438 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 [2020-10-12 20:54:51,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-10-12 20:54:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 557. [2020-10-12 20:54:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2020-10-12 20:54:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 904 transitions. [2020-10-12 20:54:51,457 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 904 transitions. Word has length 89 [2020-10-12 20:54:51,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:51,457 INFO L479 AbstractCegarLoop]: Abstraction has 557 states and 904 transitions. [2020-10-12 20:54:51,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:51,458 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 904 transitions. [2020-10-12 20:54:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:54:51,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:51,460 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:51,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:54:51,460 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:51,461 INFO L82 PathProgramCache]: Analyzing trace with hash -226991538, now seen corresponding path program 1 times [2020-10-12 20:54:51,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:51,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330335506] [2020-10-12 20:54:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:51,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:52,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:52,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:54:52,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-12 20:54:52,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:54:52,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:52,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:52,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:52,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:52,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:52,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:52,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:52,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:52,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:52,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:52,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:54:52,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330335506] [2020-10-12 20:54:52,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:52,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:52,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298899136] [2020-10-12 20:54:52,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:52,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:52,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:52,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:52,790 INFO L87 Difference]: Start difference. First operand 557 states and 904 transitions. Second operand 5 states. [2020-10-12 20:54:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:53,544 INFO L93 Difference]: Finished difference Result 1258 states and 2040 transitions. [2020-10-12 20:54:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:53,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:54:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:53,548 INFO L225 Difference]: With dead ends: 1258 [2020-10-12 20:54:53,549 INFO L226 Difference]: Without dead ends: 725 [2020-10-12 20:54:53,550 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 [2020-10-12 20:54:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-12 20:54:53,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 605. [2020-10-12 20:54:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-10-12 20:54:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 986 transitions. [2020-10-12 20:54:53,568 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 986 transitions. Word has length 89 [2020-10-12 20:54:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:53,568 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 986 transitions. [2020-10-12 20:54:53,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:53,568 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 986 transitions. [2020-10-12 20:54:53,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 20:54:53,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:53,570 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:53,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:54:53,571 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:53,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:53,571 INFO L82 PathProgramCache]: Analyzing trace with hash 193574225, now seen corresponding path program 1 times [2020-10-12 20:54:53,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:53,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071001276] [2020-10-12 20:54:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:54,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:54,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 20:54:54,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:54,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-10-12 20:54:54,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:54,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 20:54:54,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:54:54,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:55,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:55,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:55,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:55,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:55,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:55,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:55,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:55,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:55,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:55,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:55,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:55,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071001276] [2020-10-12 20:54:55,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:55,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:55,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212596171] [2020-10-12 20:54:55,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:55,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:55,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:55,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:55,054 INFO L87 Difference]: Start difference. First operand 605 states and 986 transitions. Second operand 5 states. [2020-10-12 20:54:55,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:55,764 INFO L93 Difference]: Finished difference Result 1208 states and 1955 transitions. [2020-10-12 20:54:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:55,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-12 20:54:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:55,767 INFO L225 Difference]: With dead ends: 1208 [2020-10-12 20:54:55,767 INFO L226 Difference]: Without dead ends: 627 [2020-10-12 20:54:55,768 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 [2020-10-12 20:54:55,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-12 20:54:55,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 578. [2020-10-12 20:54:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-12 20:54:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 933 transitions. [2020-10-12 20:54:55,786 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 933 transitions. Word has length 90 [2020-10-12 20:54:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:55,786 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 933 transitions. [2020-10-12 20:54:55,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:55,787 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 933 transitions. [2020-10-12 20:54:55,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 20:54:55,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:55,789 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:55,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:54:55,789 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:55,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:55,789 INFO L82 PathProgramCache]: Analyzing trace with hash -129495604, now seen corresponding path program 1 times [2020-10-12 20:54:55,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:55,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985770152] [2020-10-12 20:54:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:55,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:55,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:56,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:57,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:57,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 20:54:57,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-10-12 20:54:57,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:54:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:54:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:57,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:57,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:57,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:57,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:57,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:57,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:57,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:57,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:57,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985770152] [2020-10-12 20:54:57,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:57,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:57,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042907260] [2020-10-12 20:54:57,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:57,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:57,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:57,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:57,403 INFO L87 Difference]: Start difference. First operand 578 states and 933 transitions. Second operand 5 states. [2020-10-12 20:54:58,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:58,354 INFO L93 Difference]: Finished difference Result 991 states and 1596 transitions. [2020-10-12 20:54:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:58,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-12 20:54:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:58,360 INFO L225 Difference]: With dead ends: 991 [2020-10-12 20:54:58,360 INFO L226 Difference]: Without dead ends: 683 [2020-10-12 20:54:58,361 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 [2020-10-12 20:54:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-10-12 20:54:58,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 617. [2020-10-12 20:54:58,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-12 20:54:58,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1004 transitions. [2020-10-12 20:54:58,378 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1004 transitions. Word has length 91 [2020-10-12 20:54:58,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:58,379 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 1004 transitions. [2020-10-12 20:54:58,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:58,379 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1004 transitions. [2020-10-12 20:54:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 20:54:58,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:58,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:58,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:54:58,381 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:58,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1670357390, now seen corresponding path program 1 times [2020-10-12 20:54:58,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:58,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989115586] [2020-10-12 20:54:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:58,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:58,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:59,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 20:54:59,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1290 [2020-10-12 20:54:59,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:54:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:54:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:59,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:59,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:59,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:59,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:59,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:59,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:59,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989115586] [2020-10-12 20:54:59,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:59,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:59,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108456590] [2020-10-12 20:54:59,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:59,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:59,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:59,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:59,754 INFO L87 Difference]: Start difference. First operand 617 states and 1004 transitions. Second operand 5 states. [2020-10-12 20:55:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:00,677 INFO L93 Difference]: Finished difference Result 1022 states and 1655 transitions. [2020-10-12 20:55:00,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:00,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-12 20:55:00,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:00,680 INFO L225 Difference]: With dead ends: 1022 [2020-10-12 20:55:00,681 INFO L226 Difference]: Without dead ends: 675 [2020-10-12 20:55:00,682 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 [2020-10-12 20:55:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-12 20:55:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 578. [2020-10-12 20:55:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-12 20:55:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 933 transitions. [2020-10-12 20:55:00,700 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 933 transitions. Word has length 92 [2020-10-12 20:55:00,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:00,700 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 933 transitions. [2020-10-12 20:55:00,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 933 transitions. [2020-10-12 20:55:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:55:00,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:00,702 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:00,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:55:00,703 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:00,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1172444190, now seen corresponding path program 1 times [2020-10-12 20:55:00,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:00,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730165530] [2020-10-12 20:55:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:05,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:55:05,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:05,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:55:05,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:05,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:55:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 20:55:05,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:05,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:05,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:05,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:05,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:05,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:55:05,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730165530] [2020-10-12 20:55:05,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:05,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:55:05,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508862062] [2020-10-12 20:55:05,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:55:05,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:05,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:55:05,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:55:05,938 INFO L87 Difference]: Start difference. First operand 578 states and 933 transitions. Second operand 9 states. [2020-10-12 20:55:07,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:07,861 INFO L93 Difference]: Finished difference Result 1269 states and 2038 transitions. [2020-10-12 20:55:07,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:55:07,862 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-12 20:55:07,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:07,868 INFO L225 Difference]: With dead ends: 1269 [2020-10-12 20:55:07,868 INFO L226 Difference]: Without dead ends: 961 [2020-10-12 20:55:07,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:55:07,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-10-12 20:55:07,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 650. [2020-10-12 20:55:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-10-12 20:55:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1050 transitions. [2020-10-12 20:55:07,893 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1050 transitions. Word has length 94 [2020-10-12 20:55:07,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:07,894 INFO L479 AbstractCegarLoop]: Abstraction has 650 states and 1050 transitions. [2020-10-12 20:55:07,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:55:07,894 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1050 transitions. [2020-10-12 20:55:07,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:55:07,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:07,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:07,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:55:07,896 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:07,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:07,897 INFO L82 PathProgramCache]: Analyzing trace with hash -669499611, now seen corresponding path program 1 times [2020-10-12 20:55:07,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:07,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317307410] [2020-10-12 20:55:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:07,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:09,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:09,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:55:09,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1791 [2020-10-12 20:55:09,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:55:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:55:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:09,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:09,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:09,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:09,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:09,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:09,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:09,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:09,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317307410] [2020-10-12 20:55:09,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:09,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:09,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804060116] [2020-10-12 20:55:09,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:09,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:09,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:09,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:09,768 INFO L87 Difference]: Start difference. First operand 650 states and 1050 transitions. Second operand 5 states. [2020-10-12 20:55:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:10,495 INFO L93 Difference]: Finished difference Result 1421 states and 2285 transitions. [2020-10-12 20:55:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:10,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:55:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:10,502 INFO L225 Difference]: With dead ends: 1421 [2020-10-12 20:55:10,502 INFO L226 Difference]: Without dead ends: 795 [2020-10-12 20:55:10,504 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 [2020-10-12 20:55:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2020-10-12 20:55:10,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 654. [2020-10-12 20:55:10,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-10-12 20:55:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1056 transitions. [2020-10-12 20:55:10,524 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1056 transitions. Word has length 94 [2020-10-12 20:55:10,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:10,524 INFO L479 AbstractCegarLoop]: Abstraction has 654 states and 1056 transitions. [2020-10-12 20:55:10,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:10,525 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1056 transitions. [2020-10-12 20:55:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:55:10,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:10,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:10,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:55:10,529 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:10,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:10,529 INFO L82 PathProgramCache]: Analyzing trace with hash -715571550, now seen corresponding path program 1 times [2020-10-12 20:55:10,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:10,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417274301] [2020-10-12 20:55:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:10,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:11,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:11,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:55:11,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:11,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-12 20:55:11,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 20:55:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:55:11,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:11,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:11,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:11,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:11,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:11,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:11,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:11,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417274301] [2020-10-12 20:55:11,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:11,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:11,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591111789] [2020-10-12 20:55:11,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:11,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:11,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:11,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:11,982 INFO L87 Difference]: Start difference. First operand 654 states and 1056 transitions. Second operand 5 states. [2020-10-12 20:55:12,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:12,756 INFO L93 Difference]: Finished difference Result 1408 states and 2276 transitions. [2020-10-12 20:55:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:12,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-12 20:55:12,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:12,764 INFO L225 Difference]: With dead ends: 1408 [2020-10-12 20:55:12,764 INFO L226 Difference]: Without dead ends: 778 [2020-10-12 20:55:12,765 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 [2020-10-12 20:55:12,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-10-12 20:55:12,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 710. [2020-10-12 20:55:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2020-10-12 20:55:12,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1154 transitions. [2020-10-12 20:55:12,789 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1154 transitions. Word has length 95 [2020-10-12 20:55:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:12,789 INFO L479 AbstractCegarLoop]: Abstraction has 710 states and 1154 transitions. [2020-10-12 20:55:12,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:12,789 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1154 transitions. [2020-10-12 20:55:12,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:55:12,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:12,791 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:12,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:55:12,792 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:12,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:12,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1111831876, now seen corresponding path program 1 times [2020-10-12 20:55:12,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:12,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63908102] [2020-10-12 20:55:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:12,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:13,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:13,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:55:13,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:13,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-12 20:55:13,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:55:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:55:13,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:13,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:13,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:13,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:13,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:13,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:13,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:13,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:13,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 20:55:13,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63908102] [2020-10-12 20:55:13,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:13,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:13,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910175645] [2020-10-12 20:55:13,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:13,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:13,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:13,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:13,153 INFO L87 Difference]: Start difference. First operand 710 states and 1154 transitions. Second operand 5 states. [2020-10-12 20:55:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:13,820 INFO L93 Difference]: Finished difference Result 1428 states and 2318 transitions. [2020-10-12 20:55:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:13,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-12 20:55:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:13,824 INFO L225 Difference]: With dead ends: 1428 [2020-10-12 20:55:13,824 INFO L226 Difference]: Without dead ends: 742 [2020-10-12 20:55:13,825 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 [2020-10-12 20:55:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-12 20:55:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 702. [2020-10-12 20:55:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-10-12 20:55:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1140 transitions. [2020-10-12 20:55:13,847 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1140 transitions. Word has length 95 [2020-10-12 20:55:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:13,847 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1140 transitions. [2020-10-12 20:55:13,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:13,847 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1140 transitions. [2020-10-12 20:55:13,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:55:13,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:13,849 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:13,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:55:13,850 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:13,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:13,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1102248894, now seen corresponding path program 1 times [2020-10-12 20:55:13,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:13,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955230411] [2020-10-12 20:55:13,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:13,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:13,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:16,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:55:16,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:16,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3092 [2020-10-12 20:55:16,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:55:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 20:55:16,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:17,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:17,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:17,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:17,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:17,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:17,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:17,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 15 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:55:17,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955230411] [2020-10-12 20:55:17,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:17,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:55:17,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592091118] [2020-10-12 20:55:17,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:55:17,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:17,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:55:17,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:55:17,152 INFO L87 Difference]: Start difference. First operand 702 states and 1140 transitions. Second operand 9 states. [2020-10-12 20:55:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:19,205 INFO L93 Difference]: Finished difference Result 2043 states and 3336 transitions. [2020-10-12 20:55:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:55:19,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-10-12 20:55:19,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:19,212 INFO L225 Difference]: With dead ends: 2043 [2020-10-12 20:55:19,213 INFO L226 Difference]: Without dead ends: 1365 [2020-10-12 20:55:19,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:55:19,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-10-12 20:55:19,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1279. [2020-10-12 20:55:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-10-12 20:55:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 2118 transitions. [2020-10-12 20:55:19,259 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 2118 transitions. Word has length 108 [2020-10-12 20:55:19,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:19,260 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 2118 transitions. [2020-10-12 20:55:19,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:55:19,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 2118 transitions. [2020-10-12 20:55:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:55:19,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:19,263 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:19,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:55:19,264 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:19,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1117990455, now seen corresponding path program 1 times [2020-10-12 20:55:19,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:19,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252899744] [2020-10-12 20:55:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:19,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:20,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:24,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:55:24,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:24,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:55:24,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 20:55:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 20:55:24,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:24,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:24,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:24,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:24,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:24,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:24,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:24,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 20:55:24,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252899744] [2020-10-12 20:55:24,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:24,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:55:24,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068659205] [2020-10-12 20:55:24,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:55:24,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:24,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:55:24,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:55:24,596 INFO L87 Difference]: Start difference. First operand 1279 states and 2118 transitions. Second operand 8 states. [2020-10-12 20:55:26,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:26,567 INFO L93 Difference]: Finished difference Result 2938 states and 4838 transitions. [2020-10-12 20:55:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:55:26,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-10-12 20:55:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:26,576 INFO L225 Difference]: With dead ends: 2938 [2020-10-12 20:55:26,576 INFO L226 Difference]: Without dead ends: 1684 [2020-10-12 20:55:26,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:55:26,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2020-10-12 20:55:26,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1279. [2020-10-12 20:55:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-10-12 20:55:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 2118 transitions. [2020-10-12 20:55:26,626 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 2118 transitions. Word has length 109 [2020-10-12 20:55:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:26,626 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 2118 transitions. [2020-10-12 20:55:26,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:55:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 2118 transitions. [2020-10-12 20:55:26,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:55:26,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:26,630 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:26,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:55:26,630 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:26,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:26,631 INFO L82 PathProgramCache]: Analyzing trace with hash 339184314, now seen corresponding path program 1 times [2020-10-12 20:55:26,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:26,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702927059] [2020-10-12 20:55:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:26,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:27,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:55:27,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:27,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-12 20:55:27,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:55:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:55:27,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:27,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:27,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:27,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:55:27,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 20:55:27,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702927059] [2020-10-12 20:55:27,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:27,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:27,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221907314] [2020-10-12 20:55:27,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:27,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:27,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:27,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:27,501 INFO L87 Difference]: Start difference. First operand 1279 states and 2118 transitions. Second operand 5 states. [2020-10-12 20:55:28,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:28,422 INFO L93 Difference]: Finished difference Result 2874 states and 4742 transitions. [2020-10-12 20:55:28,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:28,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:55:28,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:28,429 INFO L225 Difference]: With dead ends: 2874 [2020-10-12 20:55:28,429 INFO L226 Difference]: Without dead ends: 1620 [2020-10-12 20:55:28,431 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 [2020-10-12 20:55:28,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2020-10-12 20:55:28,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1411. [2020-10-12 20:55:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1411 states. [2020-10-12 20:55:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2350 transitions. [2020-10-12 20:55:28,469 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2350 transitions. Word has length 109 [2020-10-12 20:55:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:28,469 INFO L479 AbstractCegarLoop]: Abstraction has 1411 states and 2350 transitions. [2020-10-12 20:55:28,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:28,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2350 transitions. [2020-10-12 20:55:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:55:28,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:28,472 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:55:28,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:55:28,473 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:28,473 INFO L82 PathProgramCache]: Analyzing trace with hash 8923418, now seen corresponding path program 1 times [2020-10-12 20:55:28,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:28,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632091560] [2020-10-12 20:55:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:33,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:33,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:55:33,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:33,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:55:33,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 20:55:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 20:55:33,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:33,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:33,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:33,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:33,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:33,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:33,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:33,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:33,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:33,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632091560] [2020-10-12 20:55:33,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:33,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:55:33,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105744674] [2020-10-12 20:55:33,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:55:33,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:33,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:55:33,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:55:33,689 INFO L87 Difference]: Start difference. First operand 1411 states and 2350 transitions. Second operand 10 states. [2020-10-12 20:55:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:36,053 INFO L93 Difference]: Finished difference Result 2546 states and 4212 transitions. [2020-10-12 20:55:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:55:36,054 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-10-12 20:55:36,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:36,074 INFO L225 Difference]: With dead ends: 2546 [2020-10-12 20:55:36,074 INFO L226 Difference]: Without dead ends: 1802 [2020-10-12 20:55:36,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:55:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2020-10-12 20:55:36,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1724. [2020-10-12 20:55:36,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1724 states. [2020-10-12 20:55:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2886 transitions. [2020-10-12 20:55:36,149 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2886 transitions. Word has length 109 [2020-10-12 20:55:36,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:36,150 INFO L479 AbstractCegarLoop]: Abstraction has 1724 states and 2886 transitions. [2020-10-12 20:55:36,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:55:36,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2886 transitions. [2020-10-12 20:55:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:55:36,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:36,154 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:36,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:55:36,154 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:36,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:36,154 INFO L82 PathProgramCache]: Analyzing trace with hash -651341843, now seen corresponding path program 1 times [2020-10-12 20:55:36,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:36,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054741775] [2020-10-12 20:55:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:36,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:41,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:41,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:55:41,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 20:55:41,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:55:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 20:55:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:41,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:41,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:41,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:41,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:41,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:41,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:41,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:41,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054741775] [2020-10-12 20:55:41,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:41,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:55:41,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406262270] [2020-10-12 20:55:41,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:55:41,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:41,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:55:41,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:55:41,373 INFO L87 Difference]: Start difference. First operand 1724 states and 2886 transitions. Second operand 9 states. [2020-10-12 20:55:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:43,282 INFO L93 Difference]: Finished difference Result 3017 states and 4998 transitions. [2020-10-12 20:55:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:55:43,282 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 110 [2020-10-12 20:55:43,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:43,289 INFO L225 Difference]: With dead ends: 3017 [2020-10-12 20:55:43,290 INFO L226 Difference]: Without dead ends: 1960 [2020-10-12 20:55:43,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:55:43,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2020-10-12 20:55:43,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1081. [2020-10-12 20:55:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1081 states. [2020-10-12 20:55:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1792 transitions. [2020-10-12 20:55:43,330 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1792 transitions. Word has length 110 [2020-10-12 20:55:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:43,330 INFO L479 AbstractCegarLoop]: Abstraction has 1081 states and 1792 transitions. [2020-10-12 20:55:43,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:55:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1792 transitions. [2020-10-12 20:55:43,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:55:43,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:43,333 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:55:43,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:55:43,333 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:43,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:43,333 INFO L82 PathProgramCache]: Analyzing trace with hash 796136732, now seen corresponding path program 1 times [2020-10-12 20:55:43,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:43,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49909372] [2020-10-12 20:55:43,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:43,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:45,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:55:45,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:45,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1828 [2020-10-12 20:55:45,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:55:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:55:45,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:45,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:45,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:45,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:45,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:45,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 20:55:45,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49909372] [2020-10-12 20:55:45,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:45,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:45,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502428983] [2020-10-12 20:55:45,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:45,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:45,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:45,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:45,242 INFO L87 Difference]: Start difference. First operand 1081 states and 1792 transitions. Second operand 5 states. [2020-10-12 20:55:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:45,886 INFO L93 Difference]: Finished difference Result 2183 states and 3614 transitions. [2020-10-12 20:55:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:45,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 20:55:45,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:45,890 INFO L225 Difference]: With dead ends: 2183 [2020-10-12 20:55:45,890 INFO L226 Difference]: Without dead ends: 1126 [2020-10-12 20:55:45,892 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 [2020-10-12 20:55:45,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-10-12 20:55:45,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1081. [2020-10-12 20:55:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1081 states. [2020-10-12 20:55:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1789 transitions. [2020-10-12 20:55:45,925 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1789 transitions. Word has length 111 [2020-10-12 20:55:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:45,926 INFO L479 AbstractCegarLoop]: Abstraction has 1081 states and 1789 transitions. [2020-10-12 20:55:45,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1789 transitions. [2020-10-12 20:55:45,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:55:45,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:45,928 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:45,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:55:45,929 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:45,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1726113216, now seen corresponding path program 1 times [2020-10-12 20:55:45,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:45,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881705968] [2020-10-12 20:55:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:50,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:50,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:55:50,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:50,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:55:50,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:55:50,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:50,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:51,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:51,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:51,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-12 20:55:51,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881705968] [2020-10-12 20:55:51,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:51,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:51,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791550034] [2020-10-12 20:55:51,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:51,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:51,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:51,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:51,017 INFO L87 Difference]: Start difference. First operand 1081 states and 1789 transitions. Second operand 5 states. [2020-10-12 20:55:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:51,624 INFO L93 Difference]: Finished difference Result 2142 states and 3555 transitions. [2020-10-12 20:55:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:51,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:55:51,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:51,627 INFO L225 Difference]: With dead ends: 2142 [2020-10-12 20:55:51,627 INFO L226 Difference]: Without dead ends: 1085 [2020-10-12 20:55:51,629 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 [2020-10-12 20:55:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-10-12 20:55:51,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1081. [2020-10-12 20:55:51,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1081 states. [2020-10-12 20:55:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1788 transitions. [2020-10-12 20:55:51,652 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1788 transitions. Word has length 112 [2020-10-12 20:55:51,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:51,652 INFO L479 AbstractCegarLoop]: Abstraction has 1081 states and 1788 transitions. [2020-10-12 20:55:51,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:51,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1788 transitions. [2020-10-12 20:55:51,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:55:51,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:51,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:51,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:55:51,654 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:51,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:51,654 INFO L82 PathProgramCache]: Analyzing trace with hash 974777003, now seen corresponding path program 1 times [2020-10-12 20:55:51,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:51,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146807731] [2020-10-12 20:55:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:51,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:52,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:52,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 20:55:52,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-12 20:55:52,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:55:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:52,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:52,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:52,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:52,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:52,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:52,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:52,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:52,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146807731] [2020-10-12 20:55:52,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:52,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:52,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309177028] [2020-10-12 20:55:52,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:52,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:52,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:52,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:52,132 INFO L87 Difference]: Start difference. First operand 1081 states and 1788 transitions. Second operand 5 states. [2020-10-12 20:55:53,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:53,087 INFO L93 Difference]: Finished difference Result 2392 states and 3948 transitions. [2020-10-12 20:55:53,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:53,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-12 20:55:53,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:53,090 INFO L225 Difference]: With dead ends: 2392 [2020-10-12 20:55:53,091 INFO L226 Difference]: Without dead ends: 1335 [2020-10-12 20:55:53,092 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 [2020-10-12 20:55:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-10-12 20:55:53,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1078. [2020-10-12 20:55:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1078 states. [2020-10-12 20:55:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1785 transitions. [2020-10-12 20:55:53,114 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1785 transitions. Word has length 117 [2020-10-12 20:55:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:53,114 INFO L479 AbstractCegarLoop]: Abstraction has 1078 states and 1785 transitions. [2020-10-12 20:55:53,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1785 transitions. [2020-10-12 20:55:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:55:53,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:53,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:53,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:55:53,116 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:53,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:53,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1715354829, now seen corresponding path program 1 times [2020-10-12 20:55:53,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:53,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310033990] [2020-10-12 20:55:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:54,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:54,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:55:54,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:54,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1660 [2020-10-12 20:55:54,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:54,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:54,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:54,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:55:54,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:54,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:54,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:54,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:54,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:54,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:54,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:54,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310033990] [2020-10-12 20:55:54,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:54,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:54,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624174664] [2020-10-12 20:55:54,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:54,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:54,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:54,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:54,875 INFO L87 Difference]: Start difference. First operand 1078 states and 1785 transitions. Second operand 5 states. [2020-10-12 20:55:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:55,848 INFO L93 Difference]: Finished difference Result 2389 states and 3942 transitions. [2020-10-12 20:55:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:55,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:55:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:55,851 INFO L225 Difference]: With dead ends: 2389 [2020-10-12 20:55:55,851 INFO L226 Difference]: Without dead ends: 1335 [2020-10-12 20:55:55,853 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 [2020-10-12 20:55:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-10-12 20:55:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1180. [2020-10-12 20:55:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2020-10-12 20:55:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1962 transitions. [2020-10-12 20:55:55,879 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1962 transitions. Word has length 119 [2020-10-12 20:55:55,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:55,880 INFO L479 AbstractCegarLoop]: Abstraction has 1180 states and 1962 transitions. [2020-10-12 20:55:55,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:55,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1962 transitions. [2020-10-12 20:55:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:55:55,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:55,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:55,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:55:55,882 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:55,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:55,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1470491960, now seen corresponding path program 1 times [2020-10-12 20:55:55,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:55,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163329933] [2020-10-12 20:55:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:55,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:56,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:55:56,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:56,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-12 20:55:56,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:55:56,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:56,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:56,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:56,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:56,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:56,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:56,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:56,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:56,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:56,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:56,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:56,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163329933] [2020-10-12 20:55:56,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:56,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:56,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512613434] [2020-10-12 20:55:56,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:56,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:56,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:56,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:56,927 INFO L87 Difference]: Start difference. First operand 1180 states and 1962 transitions. Second operand 5 states. [2020-10-12 20:55:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:57,911 INFO L93 Difference]: Finished difference Result 2491 states and 4116 transitions. [2020-10-12 20:55:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:57,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:55:57,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:57,914 INFO L225 Difference]: With dead ends: 2491 [2020-10-12 20:55:57,914 INFO L226 Difference]: Without dead ends: 1335 [2020-10-12 20:55:57,916 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 [2020-10-12 20:55:57,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-10-12 20:55:57,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1186. [2020-10-12 20:55:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1186 states. [2020-10-12 20:55:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1971 transitions. [2020-10-12 20:55:57,953 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1971 transitions. Word has length 120 [2020-10-12 20:55:57,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:57,953 INFO L479 AbstractCegarLoop]: Abstraction has 1186 states and 1971 transitions. [2020-10-12 20:55:57,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:57,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1971 transitions. [2020-10-12 20:55:57,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:55:57,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:57,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:57,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:55:57,956 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:57,957 INFO L82 PathProgramCache]: Analyzing trace with hash 825059751, now seen corresponding path program 1 times [2020-10-12 20:55:57,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:57,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241789614] [2020-10-12 20:55:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:58,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:59,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:59,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:55:59,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:59,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1435 [2020-10-12 20:55:59,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:55:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:59,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:59,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:59,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:59,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:59,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:59,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:59,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:59,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:59,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:59,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:59,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:59,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241789614] [2020-10-12 20:55:59,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:59,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:59,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258115606] [2020-10-12 20:55:59,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:59,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:59,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:59,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:59,519 INFO L87 Difference]: Start difference. First operand 1186 states and 1971 transitions. Second operand 5 states. [2020-10-12 20:56:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:00,511 INFO L93 Difference]: Finished difference Result 2485 states and 4107 transitions. [2020-10-12 20:56:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:00,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:56:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:00,516 INFO L225 Difference]: With dead ends: 2485 [2020-10-12 20:56:00,516 INFO L226 Difference]: Without dead ends: 1323 [2020-10-12 20:56:00,518 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 [2020-10-12 20:56:00,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-12 20:56:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1186. [2020-10-12 20:56:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1186 states. [2020-10-12 20:56:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1968 transitions. [2020-10-12 20:56:00,557 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1968 transitions. Word has length 120 [2020-10-12 20:56:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:00,557 INFO L479 AbstractCegarLoop]: Abstraction has 1186 states and 1968 transitions. [2020-10-12 20:56:00,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:00,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1968 transitions. [2020-10-12 20:56:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:56:00,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:00,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:00,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:56:00,560 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:00,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:00,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1981968642, now seen corresponding path program 1 times [2020-10-12 20:56:00,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:00,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398912071] [2020-10-12 20:56:00,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:01,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:01,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:56:01,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:56:01,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1239 [2020-10-12 20:56:01,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:01,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:01,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:01,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:56:01,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:01,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:01,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:01,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:01,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:01,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:01,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:01,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:01,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:01,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398912071] [2020-10-12 20:56:01,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:01,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:01,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703572123] [2020-10-12 20:56:01,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:01,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:01,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:01,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:01,901 INFO L87 Difference]: Start difference. First operand 1186 states and 1968 transitions. Second operand 5 states. [2020-10-12 20:56:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:02,863 INFO L93 Difference]: Finished difference Result 2479 states and 4095 transitions. [2020-10-12 20:56:02,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:02,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:56:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:02,866 INFO L225 Difference]: With dead ends: 2479 [2020-10-12 20:56:02,866 INFO L226 Difference]: Without dead ends: 1317 [2020-10-12 20:56:02,868 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 [2020-10-12 20:56:02,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-10-12 20:56:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1189. [2020-10-12 20:56:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2020-10-12 20:56:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1971 transitions. [2020-10-12 20:56:02,907 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1971 transitions. Word has length 121 [2020-10-12 20:56:02,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:02,907 INFO L479 AbstractCegarLoop]: Abstraction has 1189 states and 1971 transitions. [2020-10-12 20:56:02,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:02,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1971 transitions. [2020-10-12 20:56:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:56:02,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:02,910 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:02,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:56:02,910 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:02,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1764206078, now seen corresponding path program 1 times [2020-10-12 20:56:02,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:02,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491559287] [2020-10-12 20:56:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:02,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:02,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:03,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:03,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:56:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:56:07,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:07,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:56:07,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:07,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 20:56:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:08,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:08,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:08,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:08,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:08,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:08,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:08,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:08,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 37 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:56:08,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491559287] [2020-10-12 20:56:08,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:08,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:56:08,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307127863] [2020-10-12 20:56:08,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:56:08,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:08,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:56:08,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:56:08,132 INFO L87 Difference]: Start difference. First operand 1189 states and 1971 transitions. Second operand 9 states. [2020-10-12 20:56:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:10,371 INFO L93 Difference]: Finished difference Result 3155 states and 5234 transitions. [2020-10-12 20:56:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:56:10,372 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 122 [2020-10-12 20:56:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:10,376 INFO L225 Difference]: With dead ends: 3155 [2020-10-12 20:56:10,376 INFO L226 Difference]: Without dead ends: 1980 [2020-10-12 20:56:10,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:56:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-10-12 20:56:10,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1904. [2020-10-12 20:56:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-10-12 20:56:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 3184 transitions. [2020-10-12 20:56:10,446 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 3184 transitions. Word has length 122 [2020-10-12 20:56:10,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:10,446 INFO L479 AbstractCegarLoop]: Abstraction has 1904 states and 3184 transitions. [2020-10-12 20:56:10,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:56:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 3184 transitions. [2020-10-12 20:56:10,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:56:10,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:10,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:10,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:56:10,451 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:10,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:10,451 INFO L82 PathProgramCache]: Analyzing trace with hash -37293389, now seen corresponding path program 1 times [2020-10-12 20:56:10,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:10,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700837747] [2020-10-12 20:56:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:10,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:11,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:56:11,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:11,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-12 20:56:11,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:56:11,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:11,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:11,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:11,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:11,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:11,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:11,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700837747] [2020-10-12 20:56:11,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:11,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:11,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956422849] [2020-10-12 20:56:11,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:11,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:11,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:11,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:11,092 INFO L87 Difference]: Start difference. First operand 1904 states and 3184 transitions. Second operand 5 states. [2020-10-12 20:56:12,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:12,120 INFO L93 Difference]: Finished difference Result 3977 states and 6616 transitions. [2020-10-12 20:56:12,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:12,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:56:12,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:12,125 INFO L225 Difference]: With dead ends: 3977 [2020-10-12 20:56:12,125 INFO L226 Difference]: Without dead ends: 2098 [2020-10-12 20:56:12,129 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 [2020-10-12 20:56:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2020-10-12 20:56:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1909. [2020-10-12 20:56:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1909 states. [2020-10-12 20:56:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 3189 transitions. [2020-10-12 20:56:12,197 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 3189 transitions. Word has length 122 [2020-10-12 20:56:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:12,197 INFO L479 AbstractCegarLoop]: Abstraction has 1909 states and 3189 transitions. [2020-10-12 20:56:12,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:12,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 3189 transitions. [2020-10-12 20:56:12,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:56:12,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:12,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:12,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:56:12,202 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:12,202 INFO L82 PathProgramCache]: Analyzing trace with hash 534670937, now seen corresponding path program 1 times [2020-10-12 20:56:12,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:12,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481351075] [2020-10-12 20:56:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:12,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:12,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:12,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:56:12,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:12,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-12 20:56:12,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:56:12,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:12,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:12,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:12,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:12,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:12,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:12,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:12,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:12,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481351075] [2020-10-12 20:56:12,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:12,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:12,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895333309] [2020-10-12 20:56:12,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:12,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:12,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:12,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:12,712 INFO L87 Difference]: Start difference. First operand 1909 states and 3189 transitions. Second operand 5 states. [2020-10-12 20:56:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:13,756 INFO L93 Difference]: Finished difference Result 3972 states and 6606 transitions. [2020-10-12 20:56:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:13,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:56:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:13,760 INFO L225 Difference]: With dead ends: 3972 [2020-10-12 20:56:13,760 INFO L226 Difference]: Without dead ends: 2088 [2020-10-12 20:56:13,762 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 [2020-10-12 20:56:13,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2020-10-12 20:56:13,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1896. [2020-10-12 20:56:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2020-10-12 20:56:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 3172 transitions. [2020-10-12 20:56:13,805 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 3172 transitions. Word has length 123 [2020-10-12 20:56:13,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:13,805 INFO L479 AbstractCegarLoop]: Abstraction has 1896 states and 3172 transitions. [2020-10-12 20:56:13,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:13,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 3172 transitions. [2020-10-12 20:56:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:56:13,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:13,809 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-10-12 20:56:13,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 20:56:13,809 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:13,810 INFO L82 PathProgramCache]: Analyzing trace with hash -2021021802, now seen corresponding path program 1 times [2020-10-12 20:56:13,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:13,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595447427] [2020-10-12 20:56:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:13,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:13,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:18,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:18,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:56:18,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:18,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:56:18,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:18,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:18,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 20:56:18,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:56:18,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:18,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:18,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:18,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:18,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:18,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:18,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:18,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-12 20:56:18,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595447427] [2020-10-12 20:56:18,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:18,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:18,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646536458] [2020-10-12 20:56:18,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:18,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:18,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:18,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:18,903 INFO L87 Difference]: Start difference. First operand 1896 states and 3172 transitions. Second operand 5 states. [2020-10-12 20:56:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:19,654 INFO L93 Difference]: Finished difference Result 3918 states and 6551 transitions. [2020-10-12 20:56:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:19,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 20:56:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:19,658 INFO L225 Difference]: With dead ends: 3918 [2020-10-12 20:56:19,658 INFO L226 Difference]: Without dead ends: 2047 [2020-10-12 20:56:19,661 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 [2020-10-12 20:56:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2020-10-12 20:56:19,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2001. [2020-10-12 20:56:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2001 states. [2020-10-12 20:56:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 3347 transitions. [2020-10-12 20:56:19,725 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 3347 transitions. Word has length 124 [2020-10-12 20:56:19,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:19,726 INFO L479 AbstractCegarLoop]: Abstraction has 2001 states and 3347 transitions. [2020-10-12 20:56:19,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:19,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 3347 transitions. [2020-10-12 20:56:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:56:19,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:19,729 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-10-12 20:56:19,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 20:56:19,729 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:19,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:19,730 INFO L82 PathProgramCache]: Analyzing trace with hash -294567537, now seen corresponding path program 1 times [2020-10-12 20:56:19,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:19,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44231073] [2020-10-12 20:56:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:19,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:20,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:24,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:24,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:56:24,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:24,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:56:24,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:56:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:56:24,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:24,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:24,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:24,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:24,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:24,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-12 20:56:24,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44231073] [2020-10-12 20:56:24,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:24,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:24,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517747090] [2020-10-12 20:56:24,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:24,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:24,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:24,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:24,838 INFO L87 Difference]: Start difference. First operand 2001 states and 3347 transitions. Second operand 5 states. [2020-10-12 20:56:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:25,834 INFO L93 Difference]: Finished difference Result 4221 states and 7017 transitions. [2020-10-12 20:56:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:25,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 20:56:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:25,837 INFO L225 Difference]: With dead ends: 4221 [2020-10-12 20:56:25,838 INFO L226 Difference]: Without dead ends: 2245 [2020-10-12 20:56:25,840 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 [2020-10-12 20:56:25,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-10-12 20:56:25,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2006. [2020-10-12 20:56:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2020-10-12 20:56:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 3352 transitions. [2020-10-12 20:56:25,883 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 3352 transitions. Word has length 125 [2020-10-12 20:56:25,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:25,883 INFO L479 AbstractCegarLoop]: Abstraction has 2006 states and 3352 transitions. [2020-10-12 20:56:25,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 3352 transitions. [2020-10-12 20:56:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:56:25,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:25,886 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-10-12 20:56:25,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 20:56:25,886 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:25,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1606933391, now seen corresponding path program 1 times [2020-10-12 20:56:25,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:25,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788432057] [2020-10-12 20:56:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:25,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:30,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:56:30,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:30,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:56:30,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:56:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:56:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:30,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:30,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:30,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:30,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:30,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-12 20:56:31,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788432057] [2020-10-12 20:56:31,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:31,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:31,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075348618] [2020-10-12 20:56:31,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:31,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:31,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:31,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:31,005 INFO L87 Difference]: Start difference. First operand 2006 states and 3352 transitions. Second operand 5 states. [2020-10-12 20:56:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:31,848 INFO L93 Difference]: Finished difference Result 4201 states and 6999 transitions. [2020-10-12 20:56:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:31,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 20:56:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:31,852 INFO L225 Difference]: With dead ends: 4201 [2020-10-12 20:56:31,852 INFO L226 Difference]: Without dead ends: 2220 [2020-10-12 20:56:31,855 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 [2020-10-12 20:56:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2020-10-12 20:56:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2042. [2020-10-12 20:56:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2042 states. [2020-10-12 20:56:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3407 transitions. [2020-10-12 20:56:31,901 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3407 transitions. Word has length 125 [2020-10-12 20:56:31,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:31,901 INFO L479 AbstractCegarLoop]: Abstraction has 2042 states and 3407 transitions. [2020-10-12 20:56:31,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:31,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3407 transitions. [2020-10-12 20:56:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:56:31,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:31,904 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:56:31,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 20:56:31,904 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:31,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:31,905 INFO L82 PathProgramCache]: Analyzing trace with hash -337828982, now seen corresponding path program 1 times [2020-10-12 20:56:31,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:31,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702843106] [2020-10-12 20:56:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:36,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:36,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:56:36,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:56:36,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:56:36,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:56:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:37,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:37,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:37,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:37,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:56:37,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:37,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 20:56:37,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702843106] [2020-10-12 20:56:37,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:37,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:37,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232866294] [2020-10-12 20:56:37,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:37,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:37,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:37,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:37,053 INFO L87 Difference]: Start difference. First operand 2042 states and 3407 transitions. Second operand 5 states. [2020-10-12 20:56:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:37,926 INFO L93 Difference]: Finished difference Result 6034 states and 10067 transitions. [2020-10-12 20:56:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:37,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-12 20:56:37,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:37,933 INFO L225 Difference]: With dead ends: 6034 [2020-10-12 20:56:37,933 INFO L226 Difference]: Without dead ends: 4017 [2020-10-12 20:56:37,938 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 [2020-10-12 20:56:37,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2020-10-12 20:56:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 4015. [2020-10-12 20:56:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4015 states. [2020-10-12 20:56:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 6623 transitions. [2020-10-12 20:56:38,117 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 6623 transitions. Word has length 127 [2020-10-12 20:56:38,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:38,118 INFO L479 AbstractCegarLoop]: Abstraction has 4015 states and 6623 transitions. [2020-10-12 20:56:38,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 6623 transitions. [2020-10-12 20:56:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:56:38,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:38,127 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:56:38,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 20:56:38,128 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:38,128 INFO L82 PathProgramCache]: Analyzing trace with hash -309328692, now seen corresponding path program 1 times [2020-10-12 20:56:38,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:38,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351459238] [2020-10-12 20:56:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:38,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:38,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:39,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:40,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:43,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:56:43,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 20:56:43,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 20:56:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:56:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:43,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:43,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:43,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-12 20:56:43,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351459238] [2020-10-12 20:56:43,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:43,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:43,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212952381] [2020-10-12 20:56:43,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:43,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:43,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:43,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:43,280 INFO L87 Difference]: Start difference. First operand 4015 states and 6623 transitions. Second operand 5 states. [2020-10-12 20:56:44,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:44,421 INFO L93 Difference]: Finished difference Result 8744 states and 14381 transitions. [2020-10-12 20:56:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:44,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-12 20:56:44,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:44,427 INFO L225 Difference]: With dead ends: 8744 [2020-10-12 20:56:44,427 INFO L226 Difference]: Without dead ends: 4770 [2020-10-12 20:56:44,431 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 [2020-10-12 20:56:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2020-10-12 20:56:44,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 4380. [2020-10-12 20:56:44,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4380 states. [2020-10-12 20:56:44,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 7278 transitions. [2020-10-12 20:56:44,528 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 7278 transitions. Word has length 127 [2020-10-12 20:56:44,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:44,529 INFO L479 AbstractCegarLoop]: Abstraction has 4380 states and 7278 transitions. [2020-10-12 20:56:44,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:44,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 7278 transitions. [2020-10-12 20:56:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 20:56:44,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:44,534 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:44,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 20:56:44,535 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:44,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1600217974, now seen corresponding path program 1 times [2020-10-12 20:56:44,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:44,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494645567] [2020-10-12 20:56:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:44,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:44,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:49,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:49,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 20:56:49,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:49,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:56:49,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 20:56:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:56:49,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:49,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:49,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:49,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:49,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:49,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 20:56:49,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494645567] [2020-10-12 20:56:49,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:49,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:49,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814930808] [2020-10-12 20:56:49,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:49,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:49,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:49,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:49,660 INFO L87 Difference]: Start difference. First operand 4380 states and 7278 transitions. Second operand 5 states. [2020-10-12 20:56:50,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:50,699 INFO L93 Difference]: Finished difference Result 9558 states and 15800 transitions. [2020-10-12 20:56:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:50,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-12 20:56:50,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:50,706 INFO L225 Difference]: With dead ends: 9558 [2020-10-12 20:56:50,706 INFO L226 Difference]: Without dead ends: 5219 [2020-10-12 20:56:50,712 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 [2020-10-12 20:56:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2020-10-12 20:56:50,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 4421. [2020-10-12 20:56:50,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4421 states. [2020-10-12 20:56:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4421 states to 4421 states and 7327 transitions. [2020-10-12 20:56:50,820 INFO L78 Accepts]: Start accepts. Automaton has 4421 states and 7327 transitions. Word has length 128 [2020-10-12 20:56:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:50,821 INFO L479 AbstractCegarLoop]: Abstraction has 4421 states and 7327 transitions. [2020-10-12 20:56:50,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:50,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4421 states and 7327 transitions. [2020-10-12 20:56:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:56:50,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:50,826 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:50,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 20:56:50,826 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:50,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:50,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1405295998, now seen corresponding path program 1 times [2020-10-12 20:56:50,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:50,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133597217] [2020-10-12 20:56:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:50,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:51,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:51,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 20:56:51,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:51,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-12 20:56:51,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:51,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:51,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:56:51,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:56:51,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:51,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:51,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:51,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:51,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:51,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:51,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:51,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:51,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133597217] [2020-10-12 20:56:51,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:51,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:51,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939016296] [2020-10-12 20:56:51,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:51,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:51,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:51,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:51,246 INFO L87 Difference]: Start difference. First operand 4421 states and 7327 transitions. Second operand 5 states. [2020-10-12 20:56:52,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:52,428 INFO L93 Difference]: Finished difference Result 5579 states and 9197 transitions. [2020-10-12 20:56:52,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:52,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-12 20:56:52,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:52,435 INFO L225 Difference]: With dead ends: 5579 [2020-10-12 20:56:52,435 INFO L226 Difference]: Without dead ends: 4628 [2020-10-12 20:56:52,437 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 [2020-10-12 20:56:52,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2020-10-12 20:56:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4498. [2020-10-12 20:56:52,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4498 states. [2020-10-12 20:56:52,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 7466 transitions. [2020-10-12 20:56:52,603 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 7466 transitions. Word has length 129 [2020-10-12 20:56:52,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:52,603 INFO L479 AbstractCegarLoop]: Abstraction has 4498 states and 7466 transitions. [2020-10-12 20:56:52,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:52,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 7466 transitions. [2020-10-12 20:56:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:56:52,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:52,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:52,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 20:56:52,609 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:52,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:52,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1336457984, now seen corresponding path program 1 times [2020-10-12 20:56:52,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:52,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220722644] [2020-10-12 20:56:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:52,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:52,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:56:52,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:52,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-12 20:56:52,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:52,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:52,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:56:52,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:56:52,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:52,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:52,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:52,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:52,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:52,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:52,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:52,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220722644] [2020-10-12 20:56:52,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:52,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:52,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978897064] [2020-10-12 20:56:52,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:52,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:52,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:52,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:52,960 INFO L87 Difference]: Start difference. First operand 4498 states and 7466 transitions. Second operand 5 states. [2020-10-12 20:56:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:54,060 INFO L93 Difference]: Finished difference Result 5642 states and 9313 transitions. [2020-10-12 20:56:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:54,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-12 20:56:54,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:54,066 INFO L225 Difference]: With dead ends: 5642 [2020-10-12 20:56:54,066 INFO L226 Difference]: Without dead ends: 4614 [2020-10-12 20:56:54,068 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 [2020-10-12 20:56:54,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4614 states. [2020-10-12 20:56:54,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4614 to 4421. [2020-10-12 20:56:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4421 states. [2020-10-12 20:56:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4421 states to 4421 states and 7327 transitions. [2020-10-12 20:56:54,173 INFO L78 Accepts]: Start accepts. Automaton has 4421 states and 7327 transitions. Word has length 130 [2020-10-12 20:56:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:54,173 INFO L479 AbstractCegarLoop]: Abstraction has 4421 states and 7327 transitions. [2020-10-12 20:56:54,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:54,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4421 states and 7327 transitions. [2020-10-12 20:56:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-12 20:56:54,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:54,178 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:54,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 20:56:54,178 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:54,179 INFO L82 PathProgramCache]: Analyzing trace with hash 49685287, now seen corresponding path program 1 times [2020-10-12 20:56:54,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:54,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800420977] [2020-10-12 20:56:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:54,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:55,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking...