/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:13:59,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:13:59,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:13:59,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:13:59,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:13:59,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:13:59,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:13:59,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:13:59,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:13:59,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:13:59,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:13:59,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:13:59,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:13:59,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:13:59,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:13:59,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:13:59,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:13:59,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:13:59,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:13:59,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:13:59,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:13:59,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:13:59,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:13:59,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:13:59,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:13:59,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:13:59,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:13:59,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:13:59,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:13:59,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:13:59,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:13:59,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:13:59,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:13:59,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:13:59,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:13:59,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:13:59,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:13:59,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:13:59,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:13:59,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:13:59,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:13:59,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 00:13:59,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:13:59,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:13:59,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:13:59,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:13:59,238 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:13:59,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:13:59,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:13:59,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:13:59,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:13:59,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:13:59,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:13:59,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:13:59,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:13:59,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:13:59,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:13:59,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:13:59,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:13:59,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:13:59,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:13:59,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:13:59,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:13:59,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:13:59,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:13:59,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:13:59,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:13:59,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:13:59,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:13:59,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:13:59,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:13:59,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:13:59,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:13:59,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:13:59,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:13:59,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:13:59,570 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:13:59,570 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-10-14 00:13:59,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f46ed077e/41a3032570364518ab59ebef1b7826e5/FLAG4cc55b29d [2020-10-14 00:14:00,070 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:14:00,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-10-14 00:14:00,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f46ed077e/41a3032570364518ab59ebef1b7826e5/FLAG4cc55b29d [2020-10-14 00:14:00,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f46ed077e/41a3032570364518ab59ebef1b7826e5 [2020-10-14 00:14:00,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:14:00,459 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:14:00,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:14:00,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:14:00,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:14:00,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:14:00" (1/1) ... [2020-10-14 00:14:00,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201c87a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:14:00, skipping insertion in model container [2020-10-14 00:14:00,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:14:00" (1/1) ... [2020-10-14 00:14:00,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:14:00,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:14:00,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:14:00,833 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:14:00,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:14:01,001 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:14:01,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:14:01 WrapperNode [2020-10-14 00:14:01,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:14:01,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:14:01,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:14:01,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:14:01,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:14:01" (1/1) ... [2020-10-14 00:14:01,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:14:01" (1/1) ... [2020-10-14 00:14:01,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:14:01" (1/1) ... [2020-10-14 00:14:01,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:14:01" (1/1) ... [2020-10-14 00:14:01,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:14:01" (1/1) ... [2020-10-14 00:14:01,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:14:01" (1/1) ... [2020-10-14 00:14:01,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:14:01" (1/1) ... [2020-10-14 00:14:01,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:14:01,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:14:01,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:14:01,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:14:01,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:14:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:14:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:14:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:14:01,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:14:01,109 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-14 00:14:01,109 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-14 00:14:01,109 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-14 00:14:01,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:14:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:14:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 00:14:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 00:14:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:14:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-14 00:14:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-14 00:14:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-14 00:14:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:14:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:14:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:14:01,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:14:01,507 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 00:14:01,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:14:01 BoogieIcfgContainer [2020-10-14 00:14:01,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:14:01,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:14:01,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:14:01,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:14:01,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:14:00" (1/3) ... [2020-10-14 00:14:01,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284c9950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:14:01, skipping insertion in model container [2020-10-14 00:14:01,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:14:01" (2/3) ... [2020-10-14 00:14:01,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284c9950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:14:01, skipping insertion in model container [2020-10-14 00:14:01,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:14:01" (3/3) ... [2020-10-14 00:14:01,522 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-10-14 00:14:01,532 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:14:01,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:14:01,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:14:01,576 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:14:01,577 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:14:01,577 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:14:01,577 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:14:01,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:14:01,577 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:14:01,578 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:14:01,578 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:14:01,596 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-14 00:14:01,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 00:14:01,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:01,604 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:01,604 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:01,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1570912407, now seen corresponding path program 1 times [2020-10-14 00:14:01,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:01,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394756269] [2020-10-14 00:14:01,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:02,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:06,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 00:14:06,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:14:06,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4555 [2020-10-14 00:14:06,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:06,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 00:14:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:14:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:14:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:06,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:06,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:06,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:06,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:06,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:06,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:06,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:06,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:06,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:06,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:06,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:06,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:06,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:06,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:06,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:14:06,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:06,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:06,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:14:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:06,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:06,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:06,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:06,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:06,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:06,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:14:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:06,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:06,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:06,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:06,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:06,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:06,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:14:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:06,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:06,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:06,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:06,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:14:06,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:06,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:14:06,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 00:14:06,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394756269] [2020-10-14 00:14:06,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:06,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:14:06,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039405883] [2020-10-14 00:14:06,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:14:06,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:06,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:14:06,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:14:06,461 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-10-14 00:14:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:06,514 INFO L93 Difference]: Finished difference Result 118 states and 174 transitions. [2020-10-14 00:14:06,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:14:06,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-10-14 00:14:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:06,528 INFO L225 Difference]: With dead ends: 118 [2020-10-14 00:14:06,529 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 00:14:06,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:14:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 00:14:06,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-14 00:14:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 00:14:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2020-10-14 00:14:06,584 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 48 [2020-10-14 00:14:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:06,586 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2020-10-14 00:14:06,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:14:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2020-10-14 00:14:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 00:14:06,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:06,589 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:06,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:14:06,590 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:06,590 INFO L82 PathProgramCache]: Analyzing trace with hash -880454641, now seen corresponding path program 1 times [2020-10-14 00:14:06,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:06,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557434276] [2020-10-14 00:14:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:06,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:06,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:07,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:14:11,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:14:11,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:14:11,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 00:14:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:14:11,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:11,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:11,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:11,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:11,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:11,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:11,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:11,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:11,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:11,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:11,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:11,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:11,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:11,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:14:11,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:11,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:11,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:11,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:11,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:14:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:11,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:11,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:11,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:11,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:14:11,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:14:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:11,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:11,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:11,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:11,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:11,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:11,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:14:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:11,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:11,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:11,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:14:11,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:11,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:11,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:14:11,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:14:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 00:14:11,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557434276] [2020-10-14 00:14:11,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:11,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:14:11,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884479059] [2020-10-14 00:14:11,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:14:11,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:11,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:14:11,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:14:11,782 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand 4 states. [2020-10-14 00:14:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:11,835 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2020-10-14 00:14:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:14:11,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 00:14:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:11,837 INFO L225 Difference]: With dead ends: 64 [2020-10-14 00:14:11,837 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 00:14:11,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 00:14:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-14 00:14:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 00:14:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2020-10-14 00:14:11,859 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 50 [2020-10-14 00:14:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:11,861 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2020-10-14 00:14:11,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:14:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2020-10-14 00:14:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 00:14:11,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:11,866 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:11,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:14:11,867 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:11,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1901522995, now seen corresponding path program 1 times [2020-10-14 00:14:11,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:11,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205971166] [2020-10-14 00:14:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:11,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:11,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:12,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:14,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:14,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:14:14,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:14:14,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3083 [2020-10-14 00:14:14,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:14,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:14,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:14,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:14:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:14,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:14,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:14,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:14,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:14,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:14,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:14,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:14,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:14,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:14,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:14,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:14,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:14,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:15,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:15,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:15,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:15,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:14:15,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:15,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:15,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:14:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:15,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:15,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:15,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:15,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:15,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:15,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:15,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:15,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:14:15,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:14:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:15,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:15,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:15,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:15,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:15,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:14:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:15,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:15,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:15,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:15,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:15,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:15,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:15,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:15,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:15,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205971166] [2020-10-14 00:14:15,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:15,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 00:14:15,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132630363] [2020-10-14 00:14:15,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:14:15,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:15,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:14:15,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:14:15,091 INFO L87 Difference]: Start difference. First operand 52 states and 69 transitions. Second operand 4 states. [2020-10-14 00:14:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:15,269 INFO L93 Difference]: Finished difference Result 127 states and 175 transitions. [2020-10-14 00:14:15,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:14:15,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 00:14:15,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:15,276 INFO L225 Difference]: With dead ends: 127 [2020-10-14 00:14:15,276 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 00:14:15,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 00:14:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2020-10-14 00:14:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 00:14:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2020-10-14 00:14:15,313 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 50 [2020-10-14 00:14:15,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:15,316 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2020-10-14 00:14:15,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:14:15,316 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2020-10-14 00:14:15,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 00:14:15,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:15,318 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:15,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:14:15,318 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:15,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:15,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1842543050, now seen corresponding path program 1 times [2020-10-14 00:14:15,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:15,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052472406] [2020-10-14 00:14:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:15,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:15,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:16,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 00:14:17,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:14:17,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1988 [2020-10-14 00:14:17,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:14:17,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:17,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:17,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:17,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:17,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:17,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:17,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:17,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:14:17,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:14:17,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:14:17,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 00:14:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:17,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:14:17,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:17,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:14:17,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:14:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:17,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:17,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 00:14:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:17,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:17,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:17,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:17,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:17,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:17,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:17,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:17,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:17,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:17,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052472406] [2020-10-14 00:14:17,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:17,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 00:14:17,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130779491] [2020-10-14 00:14:17,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:14:17,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:17,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:14:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:14:17,436 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand 4 states. [2020-10-14 00:14:17,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:17,528 INFO L93 Difference]: Finished difference Result 141 states and 192 transitions. [2020-10-14 00:14:17,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:14:17,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 00:14:17,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:17,530 INFO L225 Difference]: With dead ends: 141 [2020-10-14 00:14:17,530 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 00:14:17,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:17,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 00:14:17,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2020-10-14 00:14:17,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 00:14:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 110 transitions. [2020-10-14 00:14:17,543 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 110 transitions. Word has length 53 [2020-10-14 00:14:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:17,544 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 110 transitions. [2020-10-14 00:14:17,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:14:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 110 transitions. [2020-10-14 00:14:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 00:14:17,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:17,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:17,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:14:17,546 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:17,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:17,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2100222520, now seen corresponding path program 1 times [2020-10-14 00:14:17,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:17,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774707606] [2020-10-14 00:14:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:17,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:17,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:18,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:14:19,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:14:19,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1573 [2020-10-14 00:14:19,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:14:19,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:19,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:19,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:19,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:19,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:19,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:19,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:19,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:14:19,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:14:19,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:14:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:19,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:19,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:19,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:14:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:19,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:19,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:19,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:19,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:19,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:14:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:19,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:19,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:19,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:19,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:19,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:19,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:19,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:19,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:19,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774707606] [2020-10-14 00:14:19,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:19,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 00:14:19,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043220237] [2020-10-14 00:14:19,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:14:19,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:19,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:14:19,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:14:19,239 INFO L87 Difference]: Start difference. First operand 81 states and 110 transitions. Second operand 4 states. [2020-10-14 00:14:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:19,336 INFO L93 Difference]: Finished difference Result 155 states and 210 transitions. [2020-10-14 00:14:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:14:19,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-14 00:14:19,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:19,339 INFO L225 Difference]: With dead ends: 155 [2020-10-14 00:14:19,339 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 00:14:19,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 00:14:19,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2020-10-14 00:14:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 00:14:19,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2020-10-14 00:14:19,351 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 54 [2020-10-14 00:14:19,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:19,352 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2020-10-14 00:14:19,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:14:19,352 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2020-10-14 00:14:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 00:14:19,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:19,354 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:19,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:14:19,355 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:19,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1604110505, now seen corresponding path program 1 times [2020-10-14 00:14:19,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:19,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771242368] [2020-10-14 00:14:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:19,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:20,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:22,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:22,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 00:14:22,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:14:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2921 [2020-10-14 00:14:22,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:22,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:14:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 00:14:22,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:22,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:22,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:22,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:22,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:22,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:22,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:22,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:22,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:22,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:22,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:22,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:22,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:22,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:22,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:22,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:22,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:22,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:14:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:22,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:14:22,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:22,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:22,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:22,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:22,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:14:22,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:22,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:14:22,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:22,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:14:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:22,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 00:14:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:22,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:22,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:22,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:22,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:22,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:22,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:22,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:22,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:22,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:22,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:22,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:22,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:14:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:22,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:22,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:22,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:22,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:22,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:22,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:22,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 00:14:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:22,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:22,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:22,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:22,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:22,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:14:22,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:22,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:14:22,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 00:14:22,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771242368] [2020-10-14 00:14:22,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:22,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:14:22,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461325224] [2020-10-14 00:14:22,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:14:22,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:22,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:14:22,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:22,476 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand 6 states. [2020-10-14 00:14:22,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:22,552 INFO L93 Difference]: Finished difference Result 104 states and 144 transitions. [2020-10-14 00:14:22,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:22,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-14 00:14:22,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:22,556 INFO L225 Difference]: With dead ends: 104 [2020-10-14 00:14:22,556 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 00:14:22,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:14:22,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 00:14:22,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2020-10-14 00:14:22,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 00:14:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 121 transitions. [2020-10-14 00:14:22,581 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 121 transitions. Word has length 55 [2020-10-14 00:14:22,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:22,583 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 121 transitions. [2020-10-14 00:14:22,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:14:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 121 transitions. [2020-10-14 00:14:22,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 00:14:22,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:22,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:22,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:14:22,586 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:22,586 INFO L82 PathProgramCache]: Analyzing trace with hash -577786995, now seen corresponding path program 1 times [2020-10-14 00:14:22,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:22,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575199831] [2020-10-14 00:14:22,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:22,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:22,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:22,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:22,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 00:14:27,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:14:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:14:27,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:14:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:27,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:27,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:14:27,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:27,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:27,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:27,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:27,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:14:27,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:14:27,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:14:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 00:14:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:27,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:14:27,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:27,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:14:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:27,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:27,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 00:14:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:27,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:27,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:27,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:27,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:27,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:27,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:27,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:27,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575199831] [2020-10-14 00:14:27,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:27,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:14:27,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890421098] [2020-10-14 00:14:27,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:14:27,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:27,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:14:27,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:27,791 INFO L87 Difference]: Start difference. First operand 90 states and 121 transitions. Second operand 5 states. [2020-10-14 00:14:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:27,939 INFO L93 Difference]: Finished difference Result 175 states and 251 transitions. [2020-10-14 00:14:27,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:27,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-14 00:14:27,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:27,944 INFO L225 Difference]: With dead ends: 175 [2020-10-14 00:14:27,945 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 00:14:27,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:27,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 00:14:27,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 91. [2020-10-14 00:14:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 00:14:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 123 transitions. [2020-10-14 00:14:27,978 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 123 transitions. Word has length 57 [2020-10-14 00:14:27,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:27,984 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 123 transitions. [2020-10-14 00:14:27,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:14:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 123 transitions. [2020-10-14 00:14:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 00:14:27,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:27,986 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:27,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:14:27,987 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:27,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:27,987 INFO L82 PathProgramCache]: Analyzing trace with hash -764226497, now seen corresponding path program 1 times [2020-10-14 00:14:27,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:27,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123319423] [2020-10-14 00:14:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:27,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:28,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:28,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:28,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:32,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:32,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 00:14:32,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:14:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:14:32,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:32,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:14:33,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:33,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:33,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:33,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:33,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:33,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:33,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:33,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:33,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:33,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:33,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:33,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:33,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:33,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:33,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:33,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:33,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:33,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:33,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:33,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 00:14:33,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:33,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:14:33,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:33,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:14:33,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:14:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:33,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:33,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:33,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:33,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:33,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:33,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:33,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:33,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:33,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:33,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 00:14:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:33,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:33,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:33,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:33,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:33,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:33,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:33,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:33,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:33,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:14:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:33,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:33,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:33,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:33,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:33,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:33,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:33,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:33,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123319423] [2020-10-14 00:14:33,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:33,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:14:33,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659406837] [2020-10-14 00:14:33,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:14:33,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:33,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:14:33,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:33,095 INFO L87 Difference]: Start difference. First operand 91 states and 123 transitions. Second operand 5 states. [2020-10-14 00:14:33,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:33,177 INFO L93 Difference]: Finished difference Result 184 states and 259 transitions. [2020-10-14 00:14:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:33,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-14 00:14:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:33,180 INFO L225 Difference]: With dead ends: 184 [2020-10-14 00:14:33,181 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 00:14:33,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:33,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 00:14:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 96. [2020-10-14 00:14:33,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 00:14:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 130 transitions. [2020-10-14 00:14:33,195 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 130 transitions. Word has length 58 [2020-10-14 00:14:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:33,195 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 130 transitions. [2020-10-14 00:14:33,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:14:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 130 transitions. [2020-10-14 00:14:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 00:14:33,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:33,197 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:33,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:14:33,197 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:33,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:33,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1858385694, now seen corresponding path program 1 times [2020-10-14 00:14:33,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:33,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891327132] [2020-10-14 00:14:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:33,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:33,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:14:38,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:14:38,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:14:38,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 00:14:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:14:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:38,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:38,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:38,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:38,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:14:38,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 00:14:38,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:38,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:14:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:38,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:38,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:38,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:14:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:38,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:38,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:14:38,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:14:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:38,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:14:38,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:14:38,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 00:14:38,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891327132] [2020-10-14 00:14:38,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:38,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 00:14:38,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598921469] [2020-10-14 00:14:38,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:14:38,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:38,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:14:38,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:38,376 INFO L87 Difference]: Start difference. First operand 96 states and 130 transitions. Second operand 8 states. [2020-10-14 00:14:38,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:38,513 INFO L93 Difference]: Finished difference Result 147 states and 206 transitions. [2020-10-14 00:14:38,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:14:38,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-10-14 00:14:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:38,515 INFO L225 Difference]: With dead ends: 147 [2020-10-14 00:14:38,516 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 00:14:38,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:14:38,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 00:14:38,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 116. [2020-10-14 00:14:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 00:14:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 162 transitions. [2020-10-14 00:14:38,542 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 162 transitions. Word has length 60 [2020-10-14 00:14:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:38,543 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 162 transitions. [2020-10-14 00:14:38,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:14:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 162 transitions. [2020-10-14 00:14:38,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 00:14:38,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:38,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:38,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:14:38,546 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:38,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:38,546 INFO L82 PathProgramCache]: Analyzing trace with hash 847268444, now seen corresponding path program 1 times [2020-10-14 00:14:38,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:38,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832926760] [2020-10-14 00:14:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:14:38,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:38,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 00:14:38,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:14:38,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:38,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:38,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:38,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:38,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:38,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:38,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:38,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:14:38,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:14:38,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:14:38,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:14:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:38,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:38,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:38,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:38,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:14:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:38,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:38,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:14:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:38,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:38,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:38,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:38,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:38,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:38,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:38,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:38,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:38,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:38,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:38,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832926760] [2020-10-14 00:14:38,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:38,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:14:38,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713857018] [2020-10-14 00:14:38,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:14:38,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:38,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:14:38,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:38,888 INFO L87 Difference]: Start difference. First operand 116 states and 162 transitions. Second operand 6 states. [2020-10-14 00:14:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:39,077 INFO L93 Difference]: Finished difference Result 241 states and 351 transitions. [2020-10-14 00:14:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:14:39,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-14 00:14:39,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:39,080 INFO L225 Difference]: With dead ends: 241 [2020-10-14 00:14:39,080 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 00:14:39,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:14:39,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 00:14:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2020-10-14 00:14:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 00:14:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 164 transitions. [2020-10-14 00:14:39,095 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 164 transitions. Word has length 60 [2020-10-14 00:14:39,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:39,096 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 164 transitions. [2020-10-14 00:14:39,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:14:39,096 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 164 transitions. [2020-10-14 00:14:39,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 00:14:39,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:39,097 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:39,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:14:39,098 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:39,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:39,098 INFO L82 PathProgramCache]: Analyzing trace with hash 731565580, now seen corresponding path program 1 times [2020-10-14 00:14:39,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:39,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217757005] [2020-10-14 00:14:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 00:14:39,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:39,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 00:14:39,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:39,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:14:39,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:39,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:39,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:39,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:39,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:14:39,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:14:39,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:39,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:39,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:14:39,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:39,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 00:14:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:39,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:39,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:39,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 00:14:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:39,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:39,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:14:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:39,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:39,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:39,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:39,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217757005] [2020-10-14 00:14:39,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:39,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:14:39,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493237434] [2020-10-14 00:14:39,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:14:39,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:39,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:14:39,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:39,369 INFO L87 Difference]: Start difference. First operand 118 states and 164 transitions. Second operand 6 states. [2020-10-14 00:14:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:39,468 INFO L93 Difference]: Finished difference Result 230 states and 332 transitions. [2020-10-14 00:14:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:14:39,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-14 00:14:39,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:39,471 INFO L225 Difference]: With dead ends: 230 [2020-10-14 00:14:39,471 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 00:14:39,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:14:39,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 00:14:39,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 122. [2020-10-14 00:14:39,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-14 00:14:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 169 transitions. [2020-10-14 00:14:39,493 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 169 transitions. Word has length 61 [2020-10-14 00:14:39,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:39,493 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 169 transitions. [2020-10-14 00:14:39,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:14:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 169 transitions. [2020-10-14 00:14:39,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 00:14:39,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:39,495 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:39,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:14:39,495 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:39,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:39,496 INFO L82 PathProgramCache]: Analyzing trace with hash 510478635, now seen corresponding path program 2 times [2020-10-14 00:14:39,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:39,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443005951] [2020-10-14 00:14:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:14:39,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 00:14:39,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:14:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:14:39,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:39,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:39,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:39,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:39,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:39,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 00:14:39,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:14:39,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:14:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:14:39,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:39,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:14:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:39,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:39,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:14:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:39,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:39,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:39,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 00:14:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:39,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:39,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:39,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:39,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:39,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:39,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:39,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443005951] [2020-10-14 00:14:39,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:39,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:14:39,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333434306] [2020-10-14 00:14:39,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:14:39,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:39,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:14:39,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:14:39,890 INFO L87 Difference]: Start difference. First operand 122 states and 169 transitions. Second operand 7 states. [2020-10-14 00:14:40,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:40,022 INFO L93 Difference]: Finished difference Result 236 states and 345 transitions. [2020-10-14 00:14:40,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:14:40,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-14 00:14:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:40,027 INFO L225 Difference]: With dead ends: 236 [2020-10-14 00:14:40,027 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 00:14:40,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 00:14:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2020-10-14 00:14:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 00:14:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 171 transitions. [2020-10-14 00:14:40,044 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 171 transitions. Word has length 63 [2020-10-14 00:14:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:40,045 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 171 transitions. [2020-10-14 00:14:40,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:14:40,045 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 171 transitions. [2020-10-14 00:14:40,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 00:14:40,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:40,046 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:40,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:14:40,047 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:40,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:40,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1118983907, now seen corresponding path program 2 times [2020-10-14 00:14:40,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:40,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434397322] [2020-10-14 00:14:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 00:14:40,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 00:14:40,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:14:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:14:40,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:40,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:40,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:40,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:40,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:40,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:40,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:14:40,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 00:14:40,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:14:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 00:14:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:14:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:40,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:40,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:40,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:40,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:14:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:40,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:40,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 00:14:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:40,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:40,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:40,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434397322] [2020-10-14 00:14:40,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:40,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:14:40,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465793005] [2020-10-14 00:14:40,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:14:40,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:40,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:14:40,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:14:40,417 INFO L87 Difference]: Start difference. First operand 123 states and 171 transitions. Second operand 7 states. [2020-10-14 00:14:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:40,512 INFO L93 Difference]: Finished difference Result 253 states and 368 transitions. [2020-10-14 00:14:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:14:40,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-14 00:14:40,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:40,517 INFO L225 Difference]: With dead ends: 253 [2020-10-14 00:14:40,517 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 00:14:40,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:40,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 00:14:40,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-10-14 00:14:40,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-14 00:14:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 178 transitions. [2020-10-14 00:14:40,535 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 178 transitions. Word has length 64 [2020-10-14 00:14:40,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:40,536 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 178 transitions. [2020-10-14 00:14:40,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:14:40,536 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 178 transitions. [2020-10-14 00:14:40,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 00:14:40,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:40,537 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:40,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:14:40,538 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:40,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:40,538 INFO L82 PathProgramCache]: Analyzing trace with hash 248882172, now seen corresponding path program 3 times [2020-10-14 00:14:40,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:40,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041406385] [2020-10-14 00:14:40,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 00:14:40,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:40,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-14 00:14:40,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:14:40,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:40,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:40,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:40,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:40,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:14:40,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 00:14:40,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 00:14:40,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 00:14:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:40,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:40,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:40,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:40,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:40,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:40,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:40,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:40,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:40,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:40,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:14:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:41,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:41,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:14:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:41,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:41,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,022 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:41,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041406385] [2020-10-14 00:14:41,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:41,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:14:41,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936343613] [2020-10-14 00:14:41,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:14:41,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:41,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:14:41,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:41,024 INFO L87 Difference]: Start difference. First operand 128 states and 178 transitions. Second operand 8 states. [2020-10-14 00:14:41,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:41,174 INFO L93 Difference]: Finished difference Result 248 states and 365 transitions. [2020-10-14 00:14:41,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:14:41,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-14 00:14:41,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:41,176 INFO L225 Difference]: With dead ends: 248 [2020-10-14 00:14:41,176 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 00:14:41,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:14:41,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 00:14:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 129. [2020-10-14 00:14:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 00:14:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 180 transitions. [2020-10-14 00:14:41,194 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 180 transitions. Word has length 66 [2020-10-14 00:14:41,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:41,194 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 180 transitions. [2020-10-14 00:14:41,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:14:41,194 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 180 transitions. [2020-10-14 00:14:41,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 00:14:41,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:41,196 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:41,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:14:41,196 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:41,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:41,197 INFO L82 PathProgramCache]: Analyzing trace with hash -638539668, now seen corresponding path program 3 times [2020-10-14 00:14:41,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:41,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888893181] [2020-10-14 00:14:41,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 00:14:41,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:41,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-14 00:14:41,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:14:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 00:14:41,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:14:41,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:41,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:41,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:41,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:41,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:14:41,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 00:14:41,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 00:14:41,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:14:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:41,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:41,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 00:14:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:41,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:41,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 00:14:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:41,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:41,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:41,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:41,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:41,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:41,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:14:41,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888893181] [2020-10-14 00:14:41,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:41,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:14:41,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394370883] [2020-10-14 00:14:41,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:14:41,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:41,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:14:41,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:41,607 INFO L87 Difference]: Start difference. First operand 129 states and 180 transitions. Second operand 8 states. [2020-10-14 00:14:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:41,744 INFO L93 Difference]: Finished difference Result 270 states and 394 transitions. [2020-10-14 00:14:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:14:41,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-14 00:14:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:41,747 INFO L225 Difference]: With dead ends: 270 [2020-10-14 00:14:41,747 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 00:14:41,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:14:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 00:14:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 134. [2020-10-14 00:14:41,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 00:14:41,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 187 transitions. [2020-10-14 00:14:41,766 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 187 transitions. Word has length 67 [2020-10-14 00:14:41,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:41,766 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 187 transitions. [2020-10-14 00:14:41,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:14:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 187 transitions. [2020-10-14 00:14:41,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 00:14:41,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:41,768 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:41,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:14:41,768 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:41,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:41,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1900672117, now seen corresponding path program 4 times [2020-10-14 00:14:41,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:41,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344128868] [2020-10-14 00:14:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:41,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:41,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:14:42,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:42,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-14 00:14:42,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:42,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 00:14:42,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:42,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:42,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:42,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:42,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:42,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:42,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 00:14:42,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 00:14:42,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:14:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:42,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:42,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:14:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:42,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:42,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:14:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:42,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:42,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 00:14:42,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344128868] [2020-10-14 00:14:42,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:42,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:14:42,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661672787] [2020-10-14 00:14:42,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:14:42,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:42,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:14:42,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:42,222 INFO L87 Difference]: Start difference. First operand 134 states and 187 transitions. Second operand 6 states. [2020-10-14 00:14:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:42,262 INFO L93 Difference]: Finished difference Result 140 states and 192 transitions. [2020-10-14 00:14:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:42,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 00:14:42,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:42,264 INFO L225 Difference]: With dead ends: 140 [2020-10-14 00:14:42,264 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 00:14:42,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:42,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 00:14:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-14 00:14:42,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 00:14:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 186 transitions. [2020-10-14 00:14:42,276 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 186 transitions. Word has length 69 [2020-10-14 00:14:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:42,276 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 186 transitions. [2020-10-14 00:14:42,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:14:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 186 transitions. [2020-10-14 00:14:42,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 00:14:42,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:42,278 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:42,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:14:42,278 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:42,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:42,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1957930419, now seen corresponding path program 1 times [2020-10-14 00:14:42,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:42,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711144981] [2020-10-14 00:14:42,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:14:42,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:42,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-14 00:14:42,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 00:14:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:14:42,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:42,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:42,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:42,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:42,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 00:14:42,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 00:14:42,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:14:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:42,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:42,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:14:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:42,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:42,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:42,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:14:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:42,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:42,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:42,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:14:42,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:42,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:42,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:42,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:42,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 00:14:42,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711144981] [2020-10-14 00:14:42,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:42,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:14:42,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608083228] [2020-10-14 00:14:42,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:14:42,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:42,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:14:42,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:14:42,764 INFO L87 Difference]: Start difference. First operand 134 states and 186 transitions. Second operand 6 states. [2020-10-14 00:14:42,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:42,807 INFO L93 Difference]: Finished difference Result 151 states and 204 transitions. [2020-10-14 00:14:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:14:42,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 00:14:42,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:42,809 INFO L225 Difference]: With dead ends: 151 [2020-10-14 00:14:42,809 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 00:14:42,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:14:42,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 00:14:42,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-14 00:14:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 00:14:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 182 transitions. [2020-10-14 00:14:42,820 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 182 transitions. Word has length 69 [2020-10-14 00:14:42,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:42,820 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 182 transitions. [2020-10-14 00:14:42,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:14:42,821 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 182 transitions. [2020-10-14 00:14:42,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 00:14:42,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:42,826 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:42,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:14:42,826 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:42,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:42,827 INFO L82 PathProgramCache]: Analyzing trace with hash 131427850, now seen corresponding path program 1 times [2020-10-14 00:14:42,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:42,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391165094] [2020-10-14 00:14:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:42,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:47,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:47,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 00:14:47,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:14:47,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:14:47,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:47,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:14:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:14:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 00:14:47,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:47,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:47,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:47,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:47,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:47,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:47,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:47,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:47,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:47,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:14:47,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:47,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:47,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:47,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:47,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:14:47,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:47,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:47,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:14:47,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:47,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:47,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:47,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:48,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 00:14:48,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 00:14:48,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:48,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:48,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 00:14:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:48,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:14:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:48,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:48,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:48,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:48,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:48,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:48,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:48,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:48,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:48,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:48,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:14:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:48,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:48,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:48,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:48,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:48,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:14:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:14:48,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 00:14:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:48,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:48,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:14:48,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:48,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 00:14:48,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:48,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:14:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-14 00:14:48,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391165094] [2020-10-14 00:14:48,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:48,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:14:48,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781549474] [2020-10-14 00:14:48,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:14:48,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:48,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:14:48,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:14:48,245 INFO L87 Difference]: Start difference. First operand 135 states and 182 transitions. Second operand 9 states. [2020-10-14 00:14:48,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:48,444 INFO L93 Difference]: Finished difference Result 154 states and 206 transitions. [2020-10-14 00:14:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:14:48,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 74 [2020-10-14 00:14:48,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:48,447 INFO L225 Difference]: With dead ends: 154 [2020-10-14 00:14:48,447 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 00:14:48,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:14:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 00:14:48,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 107. [2020-10-14 00:14:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 00:14:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 139 transitions. [2020-10-14 00:14:48,478 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 139 transitions. Word has length 74 [2020-10-14 00:14:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:48,479 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 139 transitions. [2020-10-14 00:14:48,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:14:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 139 transitions. [2020-10-14 00:14:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 00:14:48,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:48,483 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:14:48,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:14:48,484 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:48,484 INFO L82 PathProgramCache]: Analyzing trace with hash 332223283, now seen corresponding path program 1 times [2020-10-14 00:14:48,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:48,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349483598] [2020-10-14 00:14:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:49,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 00:14:53,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:14:53,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:14:53,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:53,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:14:53,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:14:53,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:53,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:53,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:53,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:14:53,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:53,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:14:53,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 00:14:53,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:53,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 00:14:53,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:14:53,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:14:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:14:53,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:53,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:14:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 00:14:53,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 00:14:53,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 00:14:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:53,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 00:14:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:53,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:53,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:53,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:53,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:14:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:53,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:53,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:53,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:14:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:53,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:53,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:14:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:53,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:53,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:53,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:53,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:53,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:53,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:53,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:14:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-14 00:14:53,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349483598] [2020-10-14 00:14:53,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:53,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 00:14:53,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084292998] [2020-10-14 00:14:53,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:14:53,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:53,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:14:53,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:14:53,710 INFO L87 Difference]: Start difference. First operand 107 states and 139 transitions. Second operand 4 states. [2020-10-14 00:14:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:53,834 INFO L93 Difference]: Finished difference Result 110 states and 141 transitions. [2020-10-14 00:14:53,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:14:53,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-10-14 00:14:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:53,836 INFO L225 Difference]: With dead ends: 110 [2020-10-14 00:14:53,836 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 00:14:53,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:14:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 00:14:53,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 00:14:53,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 00:14:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 00:14:53,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2020-10-14 00:14:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:53,840 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 00:14:53,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:14:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 00:14:53,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 00:14:53,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:14:53,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 00:14:54,076 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-10-14 00:14:54,474 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-10-14 00:14:55,079 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 89 [2020-10-14 00:14:55,348 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 77 [2020-10-14 00:14:55,614 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 114 [2020-10-14 00:14:56,016 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 109 [2020-10-14 00:14:56,658 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 25 [2020-10-14 00:14:57,049 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 23 [2020-10-14 00:14:57,096 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 00:14:57,096 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 00:14:57,097 INFO L268 CegarLoopResult]: For program point L19(lines 19 24) no Hoare annotation was computed. [2020-10-14 00:14:57,097 INFO L268 CegarLoopResult]: For program point L48(lines 47 62) no Hoare annotation was computed. [2020-10-14 00:14:57,097 INFO L264 CegarLoopResult]: At program point L69(lines 18 71) the Hoare annotation is: (or (not (<= |base2flt_#in~m| 0)) (<= (+ |base2flt_#in~m| 1) 0) (and (<= 0 base2flt_~__retres4~0) (<= base2flt_~__retres4~0 0)) (and (<= (div base2flt_~m 4294967296) 0) (or (= base2flt_~e 0) (= base2flt_~e |base2flt_#in~e|)) (not (= |base2flt_#in~e| 0)) (<= |base2flt_#in~m| base2flt_~m))) [2020-10-14 00:14:57,097 INFO L268 CegarLoopResult]: For program point L28(lines 27 42) no Hoare annotation was computed. [2020-10-14 00:14:57,097 INFO L268 CegarLoopResult]: For program point L49(lines 47 62) no Hoare annotation was computed. [2020-10-14 00:14:57,097 INFO L268 CegarLoopResult]: For program point L37(lines 37 41) no Hoare annotation was computed. [2020-10-14 00:14:57,097 INFO L264 CegarLoopResult]: At program point L37-1(lines 27 42) the Hoare annotation is: (or (<= 1 |base2flt_#in~m|) (<= (+ |base2flt_#in~m| 1) 0)) [2020-10-14 00:14:57,097 INFO L268 CegarLoopResult]: For program point L25(lines 25 65) no Hoare annotation was computed. [2020-10-14 00:14:57,098 INFO L271 CegarLoopResult]: At program point base2fltENTRY(lines 14 72) the Hoare annotation is: true [2020-10-14 00:14:57,098 INFO L268 CegarLoopResult]: For program point base2fltFINAL(lines 14 72) no Hoare annotation was computed. [2020-10-14 00:14:57,098 INFO L264 CegarLoopResult]: At program point L63(lines 25 65) the Hoare annotation is: (or (not (<= |base2flt_#in~m| 0)) (<= (+ |base2flt_#in~m| 1) 0)) [2020-10-14 00:14:57,098 INFO L268 CegarLoopResult]: For program point base2fltEXIT(lines 14 72) no Hoare annotation was computed. [2020-10-14 00:14:57,098 INFO L264 CegarLoopResult]: At program point L47-2(lines 47 62) the Hoare annotation is: (let ((.cse0 (+ (div base2flt_~m 4294967296) 1))) (and (or (<= 16777216 |base2flt_#in~m|) (<= (+ |base2flt_#in~m| 1) 0)) (or (<= base2flt_~m |base2flt_#in~m|) (<= .cse0 0)) (<= |base2flt_#in~e| base2flt_~e) (or (< 0 .cse0) (<= |base2flt_#in~m| base2flt_~m)))) [2020-10-14 00:14:57,098 INFO L268 CegarLoopResult]: For program point mulfltEXIT(lines 137 209) no Hoare annotation was computed. [2020-10-14 00:14:57,098 INFO L268 CegarLoopResult]: For program point L184(lines 184 201) no Hoare annotation was computed. [2020-10-14 00:14:57,098 INFO L268 CegarLoopResult]: For program point L184-2(lines 184 201) no Hoare annotation was computed. [2020-10-14 00:14:57,099 INFO L268 CegarLoopResult]: For program point L193(lines 193 198) no Hoare annotation was computed. [2020-10-14 00:14:57,099 INFO L268 CegarLoopResult]: For program point mulfltFINAL(lines 137 209) no Hoare annotation was computed. [2020-10-14 00:14:57,099 INFO L271 CegarLoopResult]: At program point mulfltENTRY(lines 137 209) the Hoare annotation is: true [2020-10-14 00:14:57,099 INFO L268 CegarLoopResult]: For program point L185(lines 185 190) no Hoare annotation was computed. [2020-10-14 00:14:57,100 INFO L268 CegarLoopResult]: For program point L148(lines 148 154) no Hoare annotation was computed. [2020-10-14 00:14:57,100 INFO L268 CegarLoopResult]: For program point L148-2(lines 147 208) no Hoare annotation was computed. [2020-10-14 00:14:57,100 INFO L268 CegarLoopResult]: For program point L175(lines 175 180) no Hoare annotation was computed. [2020-10-14 00:14:57,100 INFO L264 CegarLoopResult]: At program point L206(lines 147 208) the Hoare annotation is: (and (or (= 0 mulflt_~__retres10~1) (<= |mulflt_#in~b| (+ (* 4294967296 (div (+ |mulflt_#in~b| (- 1)) 4294967296)) 4294967295))) (or (<= (+ |mulflt_#in~b| 1) 0) (<= 1 |mulflt_#in~b|) (= mulflt_~b |mulflt_#in~b|))) [2020-10-14 00:14:57,100 INFO L268 CegarLoopResult]: For program point L169(lines 169 174) no Hoare annotation was computed. [2020-10-14 00:14:57,100 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 00:14:57,100 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 00:14:57,100 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 00:14:57,101 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 00:14:57,101 INFO L268 CegarLoopResult]: For program point L250(lines 250 254) no Hoare annotation was computed. [2020-10-14 00:14:57,101 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 210 266) no Hoare annotation was computed. [2020-10-14 00:14:57,101 INFO L268 CegarLoopResult]: For program point L250-2(lines 250 254) no Hoare annotation was computed. [2020-10-14 00:14:57,101 INFO L268 CegarLoopResult]: For program point L246(lines 246 262) no Hoare annotation was computed. [2020-10-14 00:14:57,101 INFO L268 CegarLoopResult]: For program point L246-1(lines 246 262) no Hoare annotation was computed. [2020-10-14 00:14:57,101 INFO L268 CegarLoopResult]: For program point L244(line 244) no Hoare annotation was computed. [2020-10-14 00:14:57,101 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 210 266) no Hoare annotation was computed. [2020-10-14 00:14:57,103 INFO L268 CegarLoopResult]: For program point L236(lines 236 240) no Hoare annotation was computed. [2020-10-14 00:14:57,103 INFO L268 CegarLoopResult]: For program point L236-2(lines 236 240) no Hoare annotation was computed. [2020-10-14 00:14:57,103 INFO L264 CegarLoopResult]: At program point L230(line 230) the Hoare annotation is: (and (<= 0 main_~zero~0) (<= main_~zero~0 0)) [2020-10-14 00:14:57,103 INFO L268 CegarLoopResult]: For program point L230-1(line 230) no Hoare annotation was computed. [2020-10-14 00:14:57,103 INFO L271 CegarLoopResult]: At program point L228(line 228) the Hoare annotation is: true [2020-10-14 00:14:57,103 INFO L268 CegarLoopResult]: For program point L228-1(line 228) no Hoare annotation was computed. [2020-10-14 00:14:57,103 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 210 266) the Hoare annotation is: true [2020-10-14 00:14:57,103 INFO L268 CegarLoopResult]: For program point L247(lines 247 256) no Hoare annotation was computed. [2020-10-14 00:14:57,104 INFO L264 CegarLoopResult]: At program point L247-2(lines 247 256) the Hoare annotation is: (and (<= main_~tmp___0~0 0) (<= 0 main_~tmp___0~0) (<= main_~tmp___1~0 0) (<= 0 main_~tmp___1~0)) [2020-10-14 00:14:57,104 INFO L268 CegarLoopResult]: For program point L233(lines 233 242) no Hoare annotation was computed. [2020-10-14 00:14:57,104 INFO L264 CegarLoopResult]: At program point L231(line 231) the Hoare annotation is: (and (<= 0 main_~zero~0) (<= main_~zero~0 0)) [2020-10-14 00:14:57,104 INFO L264 CegarLoopResult]: At program point L233-2(lines 233 242) the Hoare annotation is: (or (and (<= main_~b~0 (* 4294967296 (div main_~b~0 4294967296))) (<= 0 main_~zero~0) (<= main_~zero~0 0)) (and (= main_~tmp~2 1) (= main_~sb~0 1)) (<= (+ main_~sb~0 1) 0)) [2020-10-14 00:14:57,104 INFO L268 CegarLoopResult]: For program point L231-1(line 231) no Hoare annotation was computed. [2020-10-14 00:14:57,104 INFO L264 CegarLoopResult]: At program point L229(line 229) the Hoare annotation is: (and (<= 0 main_~zero~0) (<= main_~zero~0 0)) [2020-10-14 00:14:57,104 INFO L268 CegarLoopResult]: For program point L229-1(line 229) no Hoare annotation was computed. [2020-10-14 00:14:57,105 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-14 00:14:57,105 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-14 00:14:57,105 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-14 00:14:57,105 INFO L268 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-14 00:14:57,105 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-14 00:14:57,105 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-10-14 00:14:57,105 INFO L268 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-10-14 00:14:57,106 INFO L268 CegarLoopResult]: For program point addfltENTRY(lines 73 136) no Hoare annotation was computed. [2020-10-14 00:14:57,106 INFO L268 CegarLoopResult]: For program point addfltFINAL(lines 73 136) no Hoare annotation was computed. [2020-10-14 00:14:57,106 INFO L268 CegarLoopResult]: For program point L116(lines 116 121) no Hoare annotation was computed. [2020-10-14 00:14:57,106 INFO L268 CegarLoopResult]: For program point L108(lines 108 113) no Hoare annotation was computed. [2020-10-14 00:14:57,106 INFO L268 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-10-14 00:14:57,107 INFO L268 CegarLoopResult]: For program point L104-1(line 104) no Hoare annotation was computed. [2020-10-14 00:14:57,108 INFO L268 CegarLoopResult]: For program point L133(lines 83 135) no Hoare annotation was computed. [2020-10-14 00:14:57,108 INFO L268 CegarLoopResult]: For program point addfltEXIT(lines 73 136) no Hoare annotation was computed. [2020-10-14 00:14:57,108 INFO L268 CegarLoopResult]: For program point L84(lines 84 90) no Hoare annotation was computed. [2020-10-14 00:14:57,108 INFO L268 CegarLoopResult]: For program point L115(lines 115 126) no Hoare annotation was computed. [2020-10-14 00:14:57,109 INFO L268 CegarLoopResult]: For program point L84-2(lines 83 135) no Hoare annotation was computed. [2020-10-14 00:14:57,109 INFO L268 CegarLoopResult]: For program point L115-2(lines 115 126) no Hoare annotation was computed. [2020-10-14 00:14:57,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:14:57 BoogieIcfgContainer [2020-10-14 00:14:57,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 00:14:57,151 INFO L168 Benchmark]: Toolchain (without parser) took 56694.31 ms. Allocated memory was 143.7 MB in the beginning and 669.0 MB in the end (delta: 525.3 MB). Free memory was 103.3 MB in the beginning and 496.2 MB in the end (delta: -392.9 MB). Peak memory consumption was 545.6 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:57,152 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 143.7 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 00:14:57,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 542.06 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 102.8 MB in the beginning and 180.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:57,156 INFO L168 Benchmark]: Boogie Preprocessor took 39.13 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 178.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:57,157 INFO L168 Benchmark]: RCFGBuilder took 469.15 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 152.7 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:57,157 INFO L168 Benchmark]: TraceAbstraction took 55636.75 ms. Allocated memory was 202.9 MB in the beginning and 669.0 MB in the end (delta: 466.1 MB). Free memory was 152.0 MB in the beginning and 496.2 MB in the end (delta: -344.1 MB). Peak memory consumption was 535.2 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:57,162 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 143.7 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 542.06 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 102.8 MB in the beginning and 180.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.13 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 178.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.15 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 152.7 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 55636.75 ms. Allocated memory was 202.9 MB in the beginning and 669.0 MB in the end (delta: 466.1 MB). Free memory was 152.0 MB in the beginning and 496.2 MB in the end (delta: -344.1 MB). Peak memory consumption was 535.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: !(\old(m) <= 0) || \old(m) + 1 <= 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((!(\old(m) <= 0) || \old(m) + 1 <= 0) || (0 <= __retres4 && __retres4 <= 0)) || (((m / 4294967296 <= 0 && (e == 0 || e == \old(e))) && !(\old(e) == 0)) && \old(m) <= m) - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: (0 == __retres10 || \old(b) <= 4294967296 * ((\old(b) + -1) / 4294967296) + 4294967295) && ((\old(b) + 1 <= 0 || 1 <= \old(b)) || b == \old(b)) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((16777216 <= \old(m) || \old(m) + 1 <= 0) && (m <= \old(m) || m / 4294967296 + 1 <= 0)) && \old(e) <= e) && (0 < m / 4294967296 + 1 || \old(m) <= m) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 <= \old(m) || \old(m) + 1 <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 52.2s, OverallIterations: 19, TraceHistogramMax: 8, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1207 SDtfs, 556 SDslu, 3928 SDs, 0 SdLazy, 957 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 372 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 270 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 380 PreInvPairs, 1002 NumberOfFragments, 188 HoareAnnotationTreeSize, 380 FomulaSimplifications, 7333521 FormulaSimplificationTreeSizeReduction, 2.5s HoareSimplificationTime, 18 FomulaSimplificationsInter, 15989 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 48.9s InterpolantComputationTime, 1156 NumberOfCodeBlocks, 1156 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1137 ConstructedInterpolants, 0 QuantifiedInterpolants, 152464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 585/830 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...